Epidendrum sect. Schistochila

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Epidendrum denticulatum lip.jpg
the trilobate lip of Epidendrum denticulatum
Phân loại khoa học
Giới (regnum) Plantae
(không phân hạng) Angiospermae
(không phân hạng) Monocots
Bộ (ordo) Asparagales
Họ (familia) Orchidaceae
Phân họ (subfamilia) Epidendroideae
Tông (tribus) Epidendreae
Phân tông (subtribus) Laeliinae
Chi (genus) Epidendrum
Phân chi (subgenus) E. subg. Amphiglottium
Đoạn (section) E. sect. Schistochila

Epidendrum sect. Schistochila Rchb.f. (1861) là một section of the subgenus E. subg. Amphiglottium Lindl. (1841)[1] of the Genus Epidendrum of the Orchidaceae. E. sect. Schistochila differs from the section E. sect. Holochila in that the species in E. sect. Holochila have undivided lips; the species in E. sect. Schistochila have lobate lips. The species in both E. sect. Schistochila and E. sect. Holochila have racemose inflorescences, unlike those in E. sect. Polycladia (the other section of E. subg. Amphiglottium), which have truly paniculate inflorescences.[2] Like the other sections of E. subg. Amphiglottium, the members of E. sect. Schistochila are sympodial orchids bearing thin stems with alternate leaves (not pseudobulbs), a long peduncle covered with thin, imbricating sheathes, and a lip adnate to the very end of the column.

Subsections[sửa | sửa mã nguồn]

Reichenbach, 1861, described three subsections of Epidendrum sect. Schistochila:

  • E. subsect. Integra ("laciniis omnibus integris....... C. Schistochila integra.") lip margins without any crenulation, fimbriation, denticulation, or laceration.
  • E. subsect. Carinata ("laciniis laceria, lobo medio lamellato...... D. Schistochila carinata.") lacerate lip margins, medial lobe of lip with a keel (carina).
  • E. subsect. Tuberculata ("laciniis laceria lobo medio nuso basi bicalloso.. E. Schistochila tuberculata") lacerate lip margins, medial lobe of the lip with a large tubercule at the base.

A biochemical examination of the lacerate subsections encompassing plastid nucleotide sequence data from the trnL—trnF regions, Amplified Fragment Length Polyorphism (AFLP) data, and somatic chromosome number for 30 individuals in three of the thirteen recognized species of E. subsect. Tuberculata and twenty individuals in eleven of the twelve recognized species of E. subsect. Carinata suggested the following conclusions:[3]

Chú thích[sửa | sửa mã nguồn]

  1. ^ Lindley, "VII. Notes upon the Genus Epidendrum, by Professor Lindley." Hooker's Journal of Botany;... III, 1841, p. 81
  2. ^ "Flores racemosi (raro in paniculam racemosam luxuriantes), labellum lobatum" H. G. Reichenbach "Orchides" in Carl Müller, Ed. Walpers. Annales Botanices Systematicae 6(1861)373 Berlin. p.
  3. ^ Fábio Pinheiro, Samantha Koehler, Andréa Macêdo Corrêa, Maria Luiza Faria Salatino, Antonio Salatino & Fábio de Barros. "Phylogenetic relationships and infrageneric classification of Epidendrum subgenus Amphiglottium (Laeliinae, Orchidaceae)", Plant Systematics and Evolution published online 25 September 2009. Springer Wien. http://www.springerlink.com/content/k70111rh6ww5437l/