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(Last Modified On 9/30/2013)
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(Last Modified On 9/30/2013)
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Species
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Lupinus costaricensis Dunn
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Note
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TYPE: Costa Rica; Dodge & Thomas 6826 (MO- holotype; photo UMO, isotypes GH).
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Synonym
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Lupinus aschenbornii sensu Standley, Publ. Field Mus. Nat. Hist., Bot. Ser. 18: 545. 1938, not Schauer, Linnaea 20: 739. 1847.
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Description
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Annual herb, occasionally extending into a second season of growth, then ligneous below, weak stemmed and sprawling to decumbent, to 15-30 cm long, branching mainly at the base, the slender terete stems only 2.5 mm diameter, densely canescent with curved hairs ca. 0.5 mm long, and with numerous spread- ing pilose hairs 1-2 mm long, glabrescent. Leaves 8-1 1-digitately compound, the larger leaflets 2-3 cm long, 3-6 mm wide, generally conduplicate, glabrous above, thinly pilose beneath; petioles filiform, 4-6 cm long, twice as long as the leaflets, pubescent as on the stems; stipules subulate-caudate, 12-15 mm long, the free tips 6-8 mm long, with both long and short hair types. Inflorescences inconspic- uous, the lower flowers held within the foliage, the rachis with both hair types as on the stems, racemes only 5-12 cm long, the flowers whorled or scattered; bracts 5-10 mm long, caducous by anthesis; pedicels 2.5-3.5 mm long, hispidu- lose. Flowers with the calyx strongly 2-lipped, the lower lip nearly straight, 5- 6.5 mm long, entire or tridentate, densely pilose canescent outside, the upper lip 4-5 mm long, deeply bifid, the notch 1.6-3 mm deep; the standard obovate; 9-10 mm long, 7-8 mm wide, the wings apically connate, slightly longer than the standard, less than 5 mm wide, occasionally with lateral cilia on the veins of the crimped basal portion, the keels densely ciliate above toward the acumen; ovary strongly ascending pilose, the style curved upward, the stigma capitate, bearded. Legume oblong, 2-3 cm long, 6-7 mm wide, canescent and copiously pilose with longer hairs, slightly constricted between the 7-8 seeds; seeds dark, mottled, convex, 3 mm long, 2 mm wide.
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Habit
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herb
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Note
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The taxon described here is quite distinct from L. aschenbornii, which is caespitose, often fistulose, perennial and freezes back annually to a subsurface fleshy taproot. C. P. Smith studied the type of L. aschenbornii and he cited multiple specimens from Nevado de Toluca and Popocatepetl as typical of L. aschenbornii. Smith considered Nevado de Toluca as the most probable type locality.
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Distribution
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known only from Volcain Chiriqui Panama and Costa Rica.
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Note
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It is found high on the slopes of volcanos in open areas. Plants with only the primary inflo- rescences flowering were generally collected from January through March. Oc- casional collections from August to October were sprawling and ligneous below, with multiple inflorescences in fruit and only occasional late branches with few flowered racemes.
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Specimen
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COSTA RICA: CARTAGO: Volcdn Irazfi, 10000-11330 ft, Allen 682 (GH); 2400 m, Blaisdell 2 (MO); 3350 m, Brooks, Jan. 1970 (UMO); Davidse & Pohl 839 (MO); 2400 m, Dodge 3423 (MO). Finca Chiluca, S slope Volcdn Irazfi, Dodge & Thomas 6826 (GH, MO). Volcdn Irazil, 9000 ft, Hunnewell 16632 (GH); 10000 ft, Mart 4798 (GH); 3350 m, Moore, Jr., 6654 (BH); Seibert 1622 (MO); Webster et al. 12093 (MICH). Finca Chiluca, S slope Volcdn Irazfi, Wilbur & Stone 8734 (MSC). Volcdn Irazfi, 3350 m, Williams 16024 (MO); Williams & Molina 13905 (GH). PANAMA: CHIRIQUI: Cerro Pando, Valley of upper Rio Chiriqui Viejo, White 51 (MO).
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