Subspecies, varieties, forms and cultivars of plants belonging to the Astrophytum myriostigma group

• Astrophytum myriostigma Lem.: It is a spineless solitary plant covered with many white dots. A transverse section of the stem reveal a perfect 5 pointed star shaped form (like the common star-fish) giving the plant the appearance of a bishop's mitre (hence the common name Bishop's cap)
• Astrophytum myriostigma var. bicostatum hort.: has only two ribs. It is indeed quite unstable and rarely maintains the rare characteristic for many years.
• Astrophytum myriostigma var. columnare Frič: has a more columnar growth and smaller flowers size.
• Astrophytum myriostigma f. cristatum (hort.) Y.Itô: crested form. There are several crested forms mainly selected by Asian growers.
• Astrophytum myriostigma var. nudum (Rud.Mey.) Megata: deviate from the well-known typical form for lacking white flecks, giving a bright green, blue-green or mauve-green color overall depending on clones.
• Astrophytum myriostigma var. nudum f. colorata hort.: has yellow, orange or red stems due to the absence (or reduced production) of chlorophyll pigments.
• Astrophytum myriostigma var. nudum f. cristatum hort.: has fan shaped stems, smooth, glossy green, blue-green, grey-green or mauve-green, thin or thick (depending on clone).
• Astrophytum myriostigma var. nudum f. picta hort.: has stem variegated with yellow, orange or red. The pictured forms are very attractive and highly prized.
• Astrophytum myriostigma var. nudum f. variegatum hort.: has sectors, patches or stripes with distinct shades of yellow or orange.
• Astrophytum myriostigma var. nudum cv. Maiden's Blush: differs from the standard "nudum" for its mauve-green color overall and shine epidermis.
• Astrophytum myriostigma f. picta hort.: has stem variegated with yellow, orange, red and violet. These pictured plants are very attractive and highly prized.
• Astrophytum myriostigma var. potosinum (K.Kayser) Borg
• Astrophytum myriostigma f. proliferum hort.: has an abnormal tendency to branch forming small side pups from the areole. In cultivation there are several clones some of them branching like mad, while other almost normal.
• Astrophytum myriostigma var. quadricostatum (H.Moeller) Borg: This form deviates from the well-known typical form for having four ribs instead of five.
• Astrophytum myriostigma var. quadricostatum f. nudum hort.: (cv. Hekiho-gyoku) has only 4 ribs lacking white flecks, giving a bright green, blue-green or mauve-green color overall depending on clones.
• Astrophytum myriostigma f. rubra hort.: has notches ribs of a bright orange-red colout due to the absence (or reduced production) of chlorophyll pigments.
• Astrophytum myriostigma var. strongylogonum Backeb.: differs from the other typical myriostigmas for the 5 fat ribs that are always rounded and noticeably curved.
• Astrophytum myriostigma var. strongylogonum f. nudum cv. Costa: The plants are nude blue-grey and show wavy and corrugated surface.
• Astrophytum myriostigma var. tamaulipense (Kanfer) W.T.Marshall
• Astrophytum myriostigma var. tricostatum hort.: (cv. Sankaku Ranpo-gyoku) has only three ribs with light or dense white flecks that cover the stem.
• Astrophytum myriostigma var. tricostatum f. nudum variegatum hort.: has 3 ribs with sectors, patches or stripes with distinct shades of yellow or orange.
• Astrophytum myriostigma var. tricostatum f. nudum hort.: has only three ribs lacking or mostly lacking the white flecks giving it a bright green, blue-green, or mauve-green colour.
• Astrophytum myriostigma var. tricostatum f. proliferum hort.: has only three ribs that forms small side pups from the areole. There are several clones some of them branching like mad, while other almost normal.
• Astrophytum myriostigma var. tulense (K.Kayser) Y.Itô: has very columnar chalk-white stems up to 90 cm tall. Ribs 5 increasing to as many as 10 as the plant matures, vertical or twisted. Distribution:
• Astrophytum myriostigma f. variegatum T.Ishikawa: has sectors, patches or stripes with distinct shades of yellow or orange.
• Astrophytum myriostigma var. verum W.T.Marshall
• Astrophytum myriostigma cv. Abekobe: has an chalky-white body, almost completely covered with white flocks.
• Astrophytum myriostigma cv. Ball: has usually 5 ribs that are very fat and rounded (not acute).
• Astrophytum myriostigma cv. Ball nudum Ligthtnig: combines the characteristic radiating designs around each areole of Astrophytum myriostigma cv. Fire Works with the round ribbed stems of the the green "Ball" form.
• Astrophytum myriostigma cv. Double Ribs Nudum: its ribs forming two parallel lines of areoles on each crest.
• Astrophytum myriostigma cv. Double Ribs Nudum cristata: crested form. It has two parallel lines of areoles on each rib.
• Astrophytum myriostigma cv. Dragon: has bulging, crest-like outgrowths between contiguous ribs. These crest-like outgrowths become more and more raised as the plant ages.
• Astrophytum myriostigma cv. Dragon Hekiran: Is the nude form (green) of cv. Dragoon.
• Astrophytum myriostigma cv. Fire Works: has a very wrinkled appearance recalling the shape of an Aztekium ritteri with lovely firework designs radiating from each areole, hence the name.
• Astrophytum myriostigma cv. Fjordhest: it lacks, or mostly lacks, white flecks. In adult specimens the brown areoles on the ribs becomes very close and form an unbroken line, a chain of areoles.
• Astrophytum myriostigma cv. Fukuryu (type A): has extra rib sandwiched between two contiguous true ribs. These additional ribs will not reach the plant apex and have not areoles. It is the more common form.
• Astrophytum myriostigma cv. Fukuryu (type A) tricostatum: It shows some interesting intermediate features of both cv. Fukuryu (type A) and var. tricostatum.
• Astrophytum myriostigma cv. Fukuryu (type B): has many irregular (more or less prominent) “warts” between and on the ribs surface. This form is more rare.
• Astrophytum myriostigma cv. Fukuryu (type B) nudum: Plants with many irregular (more or less prominent) “warts” between and on the ribs surface. Nude form (or with very few white dots)
• Astrophytum myriostigma cv. Fukuryu (type B) nudum variegatum: has many irregular (more or less prominent) “warts” between and on the ribs surface and has sectors, patches or stripes with distinct shades of yellow or orange.
• Astrophytum myriostigma cv. Fukuryu (type B) tricostatum
• Astrophytum myriostigma cv. Fukuryu (type B) variegatum
• Astrophytum myriostigma cv. Fukuryu reticulatus: has small very thin, extra ribs each of them with a white felty line on it so it seems like the ribs are connected with each other.
• Astrophytum myriostigma cv. Hakujo: The woolly areoles on the ribs have a felty line between them so it seems like the areoles are connected with each other.
• Astrophytum myriostigma cv. Hakujo Fukuryu: has inherited by 'cv. Fukuryu' the felty line between contiguous areoles and by 'cv. Fukuryu' the many irregular (more or less prominent) “warts” between and on the ribs.
• Astrophytum myriostigma cv. Hakujo Fukuryu cristatum: Crested form withs felty line between contiguous areoles and irregular “warts” between and on the ribs.
• Astrophytum myriostigma cv. Hakujo Hakuun: has inherited by 'cv. Fukuryu' the felty line between contiguous areoles and by 'cv. Hakuun' the many irregular white flecks that condense forming characteristic cloud-like patches.
• Astrophytum myriostigma cv. Hakuun Tony Sato: has white flecks that condense forming characteristic cloud-like patches.
• Astrophytum myriostigma cv. Hakuun Ball Form: has rounded stems with flecks forming characteristic cloud-like patches.
• Astrophytum myriostigma cv. Hakuun Fukuryu: has many irregular (more or less prominent) “warts” between and on the ribs surface and has white flecks that condense forming characteristic cloud-like patches.
• Astrophytum myriostigma cv. Hakuun nudum: It is a nude plant with characteristic white cloud-like patches.
• Astrophytum myriostigma cv. Hakuun nudum cristatum (Thick form): is a very nice crested cactus derived from the maculated form. The stem is smooth, glossy green, blue-green, grey-green or mauve-green with white cloud-like patches.
• Astrophytum myriostigma cv. Hakuun nudum cristatum (Thin form): is a thin crested variant of the maculated form. The stem is blue-green, grey-green or mauve-green with white cloud-like patches.
• Astrophytum myriostigma cv. Hakuun nudum cristatum variegatum: has a characteristic maculated epidermis (with white cloud-like patches) The plant is the nude and variegated form with shining green and yellow epidermis.
• Astrophytum myriostigma cv. Hakuun tricostatum: Differs from the typical A. myriostigma for the white flecks that condense forming characteristic cloud-like patches and for having three ribs instead of five.
• Astrophytum myriostigma cv. Hanakago Tony Sato: In Japan The name “hanakago” also refers to Aztekium ritteri. It is a nude plant with a wrinkled appearance, almost "crumpled" recalling an extreme form of cv. Fukuryu.
• Astrophytum myriostigma cv. Hanakago Hakuun: has very wrinkled, almost "crumpled" stems and recalling the shape of an Aztekium ritteri and spotted epidermis with white cloud-like patches.
• Astrophytum myriostigma cv. Huboki: The stems and lateral branches are finger like1,5-2,5 cm in diameter, up to12 cm tall. it has white dots that condense at evenly-spaced intervals on the epidermis forming a cloud like decorative design.
• Astrophytum myriostigma cv. Hubuki: The white dots of "HUBUKI " are usually spaced in a uniform manner, while on the contrary those of "HOBOKI" form white bands.
• Astrophytum myriostigma cv. Irregular Ribs: has unusual irregular, broken or branched ribs.
• Astrophytum myriostigma cv. Karina Keel Crested Fukuryu
• Astrophytum myriostigma cv. Kikko: has pointed tubercles along the ribs edges, in fact its areoles stick out with large notches between them, giving them a saw tooth look.
• Astrophytum myriostigma cv. Kikko Alien: is the only offsetting form of "Kikko nudum". Each tubercle develops a small rudimentary or well formed offset on the tip.
• Astrophytum myriostigma cv. Kikko Ball: has usually 5 ribs that are very fat and rounded (not acute) and the tubercles are not pointed too with the apical areole deeply sunken in the centre.
• Astrophytum myriostigma cv. Kikko Ball nudum: has nude dell green stems with 5 ribs that are very fat and rounded (not acute) and the tubercles are not pointed too.
• Astrophytum myriostigma cv. Kikko f. rubra: Mutant completely lacking chlorophyll pigment. The result is a completely arange-red plant.
• Astrophytum myriostigma cv. Kikko Fukuryiu: has prominent pointed tubercles along the ribs and develops more or less prominent additional ribs on the lateral side sandwiched between two contiguous true rib.
• Astrophytum myriostigma cv. Kikko Hakuun
• Astrophytum myriostigma cv. Kikko nudum: (cv. Kikkohekiruriranpogyoku) tubercled form of nudum.
• Astrophytum myriostigma cv. Kikko nudum f. cristata: has pointed tubercles along the ribs edges giving it a saw tooth look. Stem are fan shaped, smooth, blue-green, grey-green or mauve-green ± thick (depending on clone).
• Astrophytum myriostigma cv. Kikko nudum f. variegata: has ribs lacking the white flecks and banded with sectors, patches or stripes with distinct shades of yellow or orange.
• Astrophytum myriostigma cv. Kikko nudum fa.: has very long sharply pointed tubercles.
• Astrophytum myriostigma cv. Kikko nudum Koh-yo: has pointed tubercles along the ribs edges, and bright yellow and red stem that gradually turn to dark green. The colouring accentuates during winter dormancy.
• Astrophytum myriostigma cv. Kikko quadricostatum: has only 4 ribs with pointed tubercles giving it a saw tooth look.
• Astrophytum myriostigma cv. Kikko Swarovski: has prismatic tubercles that give the overall perfection of a crystal.
• Astrophytum myriostigma cv. Koh-yo: (koo-yo or kôyo) has bright yellow and red stem that gradually turn to dark green. The colouring accentuates on winter and each individual plant has its own unique particular colouration.
• Astrophytum myriostigma cv. Koh-yo f. cristata: crested form whit yellow and red stem that gradually turn to dark green. The colouring accentuates in winter and each individual plant has its own unique particular colouration.
• Astrophytum myriostigma cv. Laimake: is similar to the cv. HAKUUN, but is smaller and more columnar with very dense white flecks that condense forming linear bands and not cloud-like patches.
• Astrophytum myriostigma cv. Lin Pin Gata Tony Sato
• Astrophytum myriostigma cv. Line Areole Tony Sato
• Astrophytum myriostigma cv. Lotusland: Old cultivar with dense white flecks that cover bumpy stems (made of grooved ribs and distinct odd tubercles ) that resemble pine cones.
• Astrophytum myriostigma cv. Maculatum cristatum
• Astrophytum myriostigma cv. Mottles Tony Sato
• Astrophytum myriostigma cv. multicostatum Tony Sato: Plants with more than five ribs, usually the ribs are 6 or 8 but occasionally up to 10 or more.
• Astrophytum myriostigma cv. Onzuka Tony Sato: (In Japanese speaking "Onzuka Ranpo-gyoku") has snowy-white, heavily speckled epidermis with fabulous markings much like the ‘kabuto’ asterias. The white marking varies considerably from plant to plant and there exist an enormous number of different designs.
• Astrophytum myriostigma cv. Onzuka Blind form: is a monstrous ball (spherical) form without any apparent ribs and with a characteristic scaly, or furry/peeling, brownish epidermis.
• Astrophytum myriostigma cv. Onzuka columnare
• Astrophytum myriostigma cv. Onzuka cristata: forms beautiful white textured crested stems. There are several clones that show different crested shapes.
• Astrophytum myriostigma cv. Onzuka cristata (monstruosa)
• Astrophytum myriostigma cv. Onzuka Fukuryu
• Astrophytum myriostigma cv. Onzuka Fukuryu tricostatum: has only 3 ribs with small extra rib sandwiched between two contiguous true ribs. Epidermic speckled with showy white markings... there exist many different designs.
• Astrophytum myriostigma cv. Onzuka Hakuun
• Astrophytum myriostigma cv. Onzuka Kikko: has either the showy white pattern of ONZUKA and the long pointed tubercles along the ribs edges of KIKKO.
• Astrophytum myriostigma cv. Onzuka Kikko Ball: has very fat and rounded ribs and the tubercles are truncate with the apical areole sunken in the centre. The white marking varies considerably from plant to plant.
• Astrophytum myriostigma cv. Onzuka Line Areoles: has heavily speckled epidermis and the areoles on the ribs have a felty line between them so it seems like the areoles are connected with each other.
• Astrophytum myriostigma cv. Onzuka quadricostatum: has four ribs instead of five and snowy-white, heavily speckled epidermis with fabulous markings. The white marking varies considerably from plant to plant.
• Astrophytum myriostigma cv. Onzuka tricostatum
• Astrophytum myriostigma cv. Onzuka tricostatum columnare
• Astrophytum myriostigma cv. Onzuka V-Type
• Astrophytum myriostigma cv. Ooibo
• Astrophytum myriostigma cv. Ooibo nudum
• Astrophytum myriostigma cv. Rensei
• Astrophytum myriostigma cv. Sazanami: has characteristic wave designs or embroidery patterns on the ribs, so it seems like the woolly areoles are connected with each other by small embroidered ripples.
• Astrophytum myriostigma cv. Seiji
• Astrophytum myriostigma cv. Spiral Ribs: This cultivar gets its name name because the ribs twist spirally around the plant.
• Astrophytum myriostigma cv. Suminagashi: is grey- or bluish-green with very thin streaks running along the sides.
• Astrophytum myriostigma cv. Tetsusabi
• Astrophytum myriostigma cv. Yaribusana
• Astrophytum myriostigma cv. Yoroi: (In Japanese speaking Yoroi kikko herikan) has prominent pointed tubercles along the ribs like "Kikko" and the irregular (more or less prominent) supplemental ribs between and on the ribs surface like "Fukuryiu".