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= Haworthia opalina M.Hayashi
Haworthiad 15: 17 (2001).
Accepted Scientific Name: Haworthia minor (Aiton) Duval
Pl. Succ. Horto Alencon. 7 (1809). Duval
Origin and Habitat: Tulista opalinaSN|35366]]SN|35366]] is known only from one single hill on Brandrivier farm between Garcias Pass and Barrydale, north of the mountains in the Little Karoo, Republic of South Africa..
Habitat and ecology: This species grows extremely well hidden in the close company of Haworthia obserata, which is known from this area and equally rare. In the same locality grows Haworthia arachnoidea var. nigricansSN|16995]]SN|16995]], Haworthia multifolia and Astroloba corrugataSN|31565]]SN|31565]]. Natural hybrids of opalina and corrugata were reported from here.
Synonyms:
- Haworthia opalina M.Hayashi
- Tulista opalina (M.Hayashi) Breuer
Haworthia minor (Aiton) Duval
Pl. Succ. Horto Alencon. 7 (1809).
Synonymy: 37
- Haworthia minor (Aiton) Duval
- Aloe margaritifera var. minor Aiton
- Apicra minor (Aiton) Steud.
- Haworthia margaritifera subvar. minor A.Berger
- Haworthia pumila subs. minima (Aiton) Halda
- Haworthia brevis Haw.
- Haworthia erecta Haw.
- Aloe erecta (Haw.) Schult. & Schult.f.
- Haworthia margaritifera var. erecta (Haw.) Baker
- Haworthia granata (Willd.) Haw.
- Apicra granata Willd.
- Haworthia margaritifera var. granata (Willd.) Baker
- Haworthia granata var. polyphylla Haw.
- Haworthia margaritifera subvar. polyphylla (Haw.) Uitewaal
- Haworthia major (Aiton) Duval
- Haworthia margaritifera var. corallina Baker
- Haworthia margaritifera subvar. laetivirens (Salm-Dyck) A.Berger
- Aloe erecta var. laetivirens Salm-Dyck
- Haworthia maxima (Haw.) Duval
- Aloe margaritifera var. maxima Haw.
- Aloe semimargaritifera var. maxima (Haw.) Salm-Dyck
- Apicra maxima (Haw.) Steud.
- Haworthia margaritifera var. maxima Engl.
- Haworthia semimargaritifera var. maxima (Haw.) Haw.
- Haworthia minima (Aiton) Haw.
- Aloe margaritifera var. minima Aiton
- Catevala minima (Aiton) Kuntze
- Haworthia pumila subs. minima (Aiton) Halda
- Tulista minima (Aiton) Boatwr. & J.C.Manning
- Haworthia mutabilis Poelln.
- Haworthia opalina M.Hayashi
- Tulista opalina (M.Hayashi) Breuer
- Haworthia poellnitziana Uitewaal
- Haworthia minima var. poellnitziana (Uitewaal) M.B.Bayer
- Tulista minima var. poellnitziana (Uitewaal) Breuer
- Haworthia uitewaaliana Poelln.
Description: Haworthia opalinaSN|31487]]SN|35365]] (Tulista opalinaSN|35366]]SN|35366]]) is one of the most attractive plant in Haworthia group. It is rare and fascinating in one hand and subject of misinterpretation in the other hand because at first glance the plants are somewhat similar to Haworthia opalinaSN|35365]], but it is quite a large growing plant with rosette up to 12-15 cm in diameter. Long minima-like leaves are covered with dense glossy and transparent tubercles. Colour is light green. It shares the feature of having small and densely arranged tubercles on the leaves with Haworthia minima, but flower types and shape of fruits are much more like maxima than minima. It is also much closer linked to Haworthia maximaSN|31487]] in terms of geographic distribution. The tubercles of Haworthia opalinaSN|35365]]SN|35365]] have a glossy and transparent appearance while the tubercles found on the general Haworthia maximaSN|31487]] plant are more opaque-white in colour. Haworthia minima is also more regularly inclined to cluster while H. opalina plants remain mostly solitary. The flowers of Haworthia opalinaSN|35365]] have the same rather thick perianth tube and swollen base as that of Haworthia maxima and the fruits are identical to the short and smooth globose fruits as found in Haworthia maximaSN|35365]]SN|31487]].
Derivation of specific name: "opalina" for its tubercles remembering of an opal, a gemstone typically semi-transparent and often marked by iridescent play of colours.
Subspecies, varieties, forms and cultivars of plants belonging to the Haworthia minor group
- Haworthia minor (Aiton) Duval
- Haworthia opalina M.Hayashi
Bibliography: Major references and further lectures
1) Jakub Jilemicky, http://haworthia-gasteria.blogspot.com/2016/12/tulista-opalina.html
2) Gerhard Marx. “Haworthia opalina - Dr. M. Hayashi” web http://soilandroots.com/desert-plants/Haworthia/opalina/haworthia-opalina.html
Cultivation and Propagation: Tulista opalinaSN|35366]]SN|35366]] is quite slow grow species, first flowering occurs after 6-7 years in cultivation. Propagation must be done by seed.
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