Calamagrostis planifolia
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Ordo: Poales
Familia: Poaceae
Genus: Calamagrostis
Name
Calamagrostis planifolia (Kunth) Trin. ex Steud., Nomencl. Bot. (ed. 2) 1: 251. 1840. Deyeuxia planifolia Kunth, Nov. Gen. Sp. (quarto ed.) 1: 145. 1815[1816]. Arundo planifolia (Kunth) Poir., Encycl. 4: 707. 1816. – Wikispecies link – Pensoft Profile
- [[ | ]] Type. PERU. In montanis Andinum Peruvianorum prope Guangamarca, 1250 hexap. [2286 m], 1833, Bonpland s.n. (holotype: P (P00729787 [image!]); isotype: BAA (BAA00001855 [image!]) fragm. ex P, P (P030106 [image!]) fragm., LE (LE-TRIN-1801.01!) fragm. ex Herb. Willd. 176).
- [[ | ]] = Deyeuxiapubescens Pilg., Bot. Jahrb. Syst. 25(5): 712. 1898, syn. nov. Calamagrostispubescens (Pilg.) Pilg., Bot. Jahrb. Syst. 42: 60. 1908, syn. nov. Type: COLOMBIA. [Crescit in monte ignivomo Pasto] Volcán de Pasto, 3400 m alt., 9 Dec. 1869, Stübel 389b (lectotype, designated by Vega and Rúgolo de Agrasar (2013[1]: 28): BAA (BAA00000811 [image!]) fragm. ex B; isolectotype: US (US00406355!) fragm. ex B).
- [[ | ]] = Calamagrostispittieri Hack., Oesterr. Bot. Z. 52(3): 108. 1902, syn. nov. Type: COSTA RICA. Cerro de Buena Vista, pres du sommit, [prope cacumen, Valle du General], 3100 m alt., 19 Jan. 1891, Pittier s.n. Pl. Costaric. Exs. 3359 (holotype: W (W19160029198 [image!]); isotypes: B, BR (BR0000006865702 [image!]), BAA (BAA00000766 [image!]) fragm. ex B).
Comments
Calamagrostispittieri, recorded for Costa Rica, Colombia and Venezuela (Morales Quirós 2003[2]; Hokche et al. 2008[3]; Giraldo-Cañas 2011[4], 2013[5]; Giraldo-Cañas et al. 2016[6]) is synonymised under Calamagrostisplanifolia as no satisfactory characteristics were found to separate the two. Both have spikelets with florets bearing a pilose rachilla extension with hairs reaching from ¾ to passing the apex of the lemma, an awn inserted in the upper half of the lemma, 2 anthers that usually are short, ca. 1–1.4 mm long and leaf blades that are usually flat (sometimes drying convolute) with variable indumentum.
Calamagrostispubescens was considered an endemic species to Colombia (Giraldo- Cañas 2013[5]) and only known from the type specimen that was collected in southern Colombia from hills surrounding Pasto of departamento Narino. The B holotype was destroyed during World War II, with fragments only remaining at BAA and US. The BAA fragment consists of spikelets whose size and characteristics match C.planifolia (Zulma Rúgolo de Agrasar, pers. comm.), and the description of vegetative characteristics in the protologue also matches C.planifolia and so we consider C.pubescens a synonym of C.planifolia. Nevertheless, further study is needed for the C.planifolia complex in Colombia and there are certain crucial characters, such as number of stamens that need to be verified in these taxa. The C.pubescens BAA fragment lacked anthers (Zulma Rúgolo de Agrasar, pers. comm.) and Pilger (1898[7]: 712) did not describe them.
Taxon Treatment
- Sylvester, S; Soreng, R; Bravo-Pedraza, W; Cuta-Alarcon, L; Giraldo-Cañas, D; Aguilar-Cano, J; Peterson, P; 2019: Páramo Calamagrostis s.l. (Poaceae): An updated list and key to the species known or likely to occur in páramos of NW South America and southern Central America including two new species, one new variety and five new records for Colombia PhytoKeys, 122: 29-78. doi
Other References
- ↑ Vega A, Rúgolo de Agrasar Z (2013) Lectotypifications in taxa of the genera Calamagrostis, Deyeuxia, and Digitaria (Poaceae). Gayana.Botánica70(1): 31–35.
- ↑ Morales-Quirós J (2003) Poaceae. In: Hammel B Grayum M Herrera-Mora C Zamora-Villalobos N (Eds) Manual of Plants of Costa Rica.Monographs in Systematic Botany from the Missouri Botanical Garden 93(3), 598–821.
- ↑ Hokche O, Berry P, Huber O (Eds) (2008) Nuevo Catálogo de la Flora Vascular de Venezuela. Fundación Instituto Botánico de Venezuela, Caracas, 1–859.
- ↑ Giraldo-Cañas D (2011) Catálogo de la familia Poaceae en Colombia.Darwiniana49: 139–247.
- ↑ 5.0 5.1 Giraldo-Cañas D (2013) Las gramíneas en Colombia: riqueza, distribución, endemismo, invasión, migración, usos y taxonomías populares. Biblioteca José Jerónimo Triana No. 26, 1–382.
- ↑ Giraldo-Cañas D, Londoño X, Clark L (2016) Poaceae. In: Bernal R Gradstein S Celis M (Eds) Catálogo de plantas y líquenes de Colombia, vol.2. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá D.C., 2127–2205.
- ↑ Pilger R (1898) Plantae Stübelianae novae, Gramineae.Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie25(5): 709–721.
