Sertifera
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| Lindl. & Rchb. f. |
The plant genus sertifera belongs to the family of orchids (Orchidaceae). The nine or so species are common in the high Andes in South America.
description
Vegetative characteristics
Sertifera includes perennial herbaceous plants that grow terrestrially . The fleshy roots are hairy. The thin shoot axes are clumpy close together, they are upright and have two-line leaves.
The leaves are sessile. The leaf base tightly encompasses the stem as a long sheath. The leaf blade is puckered (plicate) along the numerous leaf veins.
Generative characteristics
The inflorescences are in the leaf axils, the laterally compressed inflorescence stem is shorter or at most as long as the corresponding leaf. The flowers are crowded together almost like a head or are arranged on one side. The flower stalk is short.
The hermaphrodite flowers are zygomorphic and threefold. The pink to purple colored flowers are round and not wide open. The sepals and petals are shaped roughly the same: concave with an outwardly curved tip. The inner petals are a bit narrower. All petals are free. The lip , which is of a rather thin texture and encompasses the column , has a three-dimensional shape and cannot be spread flat. At the base it is widened like a sack, the blade is provided with a transverse, plate-like bar that holds the edges together and divides the lip into two chambers one behind the other. Only a narrow slot remains open between the lip and the column. The column is slender, elongated, hairy, cylindrical in cross section, laterally winged in front. The stamen contains eight pollinia in two separate counters. The pollinia are roughly pear-shaped, four each hang on a round adhesive disc (Viscidium). The stamen is hood-shaped surrounded by tissue of the column (clinandrium). The stigma is bean-shaped, bilobed and transverse to the column axis. The separating tissue between the stamen and the stigma (rostellum) is bilobed.
Locations
Sertifera occurs at altitudes from 2000 to 3200 meters. The species grow in low forests and bushes as well as in the páramo .
Systematics and distribution
The genus Sertifera was established in 1876 by John Lindley . The type species is Sertifera purpurea . The generic name Sertifera is made up of the Latin sertum for "wreath" and ferre for "to wear".
The genus Sertifera forms together with Elleanthus and Sobralia the tribe Sobralieae. Within the subfamily Epidendroideae , this tribe represents a basal line. Sertifera differs from Elleanthus mainly in the lateral inflorescences and the differently shaped lip.
Sertifera species are common in the Andes of South America, especially in Colombia and Ecuador.
There are about nine species in the genus Sertifera :
- Sertifera aurantiaca C. Schweinf : It occurs from northeastern Colombia to northwestern Venezuela.
- Sertifera colombiana Schltr. : It occurs from Colombia to northwestern Venezuela.
- Sertifera gracilis Rchb. f. ex Szlach. & Baranow : It was first described from Colombia in 2014.
- Sertifera grandifolia L.O.Williams : It occurs in Colombia.
- Sertifera hirtziana Baranow & Kolan. : The species first described in 2019 occurs in Ecuador.
- Sertifera major Schltr. : It occurs from southwestern Colombia to Ecuador.
- Sertifera parviflora Schltr. : It occurs in Colombia and Ecuador.
- Sertifera purpurea Rchb. f. (Syn .: Sertifera lehmanniana (Kraenzl.) Garay ): It occurs in Colombia and Ecuador.
- Sertifera risaraldana Szlach. & Baranow It was first described in 2014 from Colombia.
This genus Sertifera is no longer included:
- Sertifera virgata Rchb. f. → Elleanthus virgatus (Rchb. F.) C. Schweinf.
literature
- Leslie A. Garay: 225 (1). Orchidaceae (Cypripedioideae, Orchidoideae and Neottioideae) . In: Gunnar Harling, Benkt Sparre (ed.): Flora of Ecuador . tape 9 , 1978, ISSN 0347-8742 , p. 134-135 .
- Alec M. Pridgeon, Phillip Cribb, Mark W. Chase (Eds.): Genera Orchidacearum. Epidendroideae (Part one) . tape 4 . Oxford University Press, New York / Oxford 2005, ISBN 0-19-850712-7 , pp. 600-601 .
Individual evidence
- ↑ a b c d e f g h i j k l Rafaël Govaerts (Ed.): Sertifera. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved April 10, 2020.