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(Last Modified On 7/12/2013)
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(Last Modified On 7/12/2013)
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Species
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Lobelia irasuensis Planch. & Oerst.
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PlaceOfPublication
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Vidensk. Meddel. Dansk Naturhist. Foren. Kjobenhavn-1857: 153. 1857.
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Note
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TYPE: Costa Rica, Volcan Irazui, 8000 ft, Oersted 9246 (C, holotype, US, photo).
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Synonym
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Lobelia warscewiczii Vatke, Linnaea 38: 718. 1874. TYPE: Costa Rica or Panama, Warscewicz 20 (B, holotype, not seen; US, photo). Dortmannia warscewiczii (Vatke) Kuntze, Rev. Gen. P1. 2: 973. 1891.
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Description
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Perennial herbs with tuberous fleshy roots; stems erect or decumbent, 8-35 (-56) cm tall, glabrous, sparsely short-pubescent or scabridulous below. Principal leaves with blades firm, linear to linear-lanceolate, the lowermost sometimes ob- long, apically acuminate, basally rounded to tapering, often somewhat subclasping and sessile, 1-3(-5) cm long, 2-5(-8) mm wide, usually (3-)7-12(-15) times as long as wide. Inflorescences loosely few- to 30-flowered, often somewhat secund; pedicels ascendant to erect, slender, usually spreading short-pubescent, 4-6(-9) mm long; bracteoles usually present, basal, knoblike or oblong to linear-filiform, 0.5-1.5 mm long. Flowers 8-14 mm long; hypanthium minutely short-pubescent, especially basally, cup shaped and somewhat oblique at anthesis; calyx lobes linear to narrowly triangular, 2-5 mm long, often callose-serrate, sparingly ap- pressed short-pubescent especially near base of the upper surface; corolla gla- brous or nearly so, deep blue or purplish, usually with conspicuous creamy mark- ings near base of the 3 lower lobes, the tube 2.8-3.0 mm long, usually fenestrate, the 2 upper lobes oblong-spatulate to linear or triangular, 3-6 mm long, the 3 lower lobes elliptic to oblong-spatulate, 3-6 'mm long and 2.5-3.5 mm wide; fila- ments ciliate and distinct for most of their length but apically connate into a tube 1-2 mm long, the anther tube 1.0-1.3 mm long, all anthers minutely apically white-tufted. Capsules 1/2-3/4 inferior, 3-5 mm long; seeds ca. 0.5 mm long, dull to somewhat lustrous with faint longitudinal markings.
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Habit
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herbs
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Distribution
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Lobelia irasuensis is found on the highest mountains of Costa Rica and western Panama
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Elevation
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above 3,000 m.
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Note
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McVaugh (1943: 62) considered this species to be composed of three va- rieties with only the type variety occurring in Costa Rica and Panama and the other two restricted to central Mexico.
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Specimen
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CHI'IQUI: Volcaln Chiriqui, 10400 ft, Davidson 1006 (F, GH, MO, US). Chiriqui Vol- cano, El Potrero Camp, 2800-3000 m, Pittier 3072 (GH," US). Valley of the upper Rio Chiriqui Viejo, White 59a (MO). Potrero Muleto to summit, Volcaln Chiriqui, 3500-4000 m, Woodson & Schery 407 (GH, MO). Potrero, Loma Larga to summit, Volcan Chiriqui, 2500-3380 m, Woodson et al. 1031 (GGH, MO, NY).
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