Daleae Imagines page 755 plate LXXXI

  • Title

    Daleae Imagines page 755 plate LXXXI

  • Creator(s)

    R. C. Barneby

  • Publisher

    The New York Botanical Garden Press

  • Description

    PLATE LXXXI Dalea cylindrica Hooker (in part, continued on Pl. LXXXII), a polymorphic species of the Peruvian Andes, one variety extending into s. Ecuador. All forms of D. cylindrica, notable for its persistent bracts, are at least potentially suffruticose, but vary greatly in stature according to age and habitat, the var. nova reaching 2 m, the var. haenkeana sometimes forming prostrate mats. The var. cylindrica, dispersed along the Pacific slope between 800 and 3500 m between s. Cajamarca and Moquegua, has relatively few (mostly 5-15) and large, green leaflets, a calyx externally glabrous or only thinly pilose from middle upward, and epistemonous petals varying from pale yellow tinged with amethyst to lively red-purple, exceptionally blue. The var. sulfurea (Ulbrich) Barneby (not illustrated) has pale yellow petals combined with more densely pubescent foliage but is otherwise similar. The var. haenkeana Barneby, found in centr. Peru mostly in the drainage of Rio Maranon, differs in its smaller leaflets and shorter spikes of usually blue flowers. The blue flower reappears in var. nova (Ulbrich) Barneby (Plate LXXXII), which differs from other forms of the species in its more numerous leaflets, 13-21 in most primary leaves and from var. cylindrica further in the calyx, pilose externally from base upward except for distally glabrate teeth. The var. nova is widespread, mostly on the Amazonian slope between 2000 and 3000 m, from Junin, Peru, n. to Chimborazo, Ecuador. In north-centr. Peru the varieties of D. cylindrica are all more or less confluent. — Habit × 1; the rest × 5. var. cylindrica: 1) top of flowering stem; 2) flower + bract; 3) calyces; 4) banner, ventral .view. var. haenkeana: 1) flowering branchlet; 2) stipules; 3) leaflets; 4) bracts, all profile view; 5) flower + bract; 6, 6a) calyces; 7) banner, ventral and profile views; 8) wings; 9) keel.

  • Taxonomy

    Dalea cylindrica Hook.

    Dalea cylindrica Hook. var. cylindrica

    Dalea cylindrica var. haenkeana Barneby

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  • Cite This Image

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  • Image Type

    Illustration