Daleae Imagines page 809 plate CVIII

  • Title

    Daleae Imagines page 809 plate CVIII

  • Creator(s)

    R. C. Barneby

  • Publisher

    The New York Botanical Garden Press

  • Description

    PLATE CVIII Dalea hintoni Sandwith var. hintoni and var. subbijuga Barneby, together with var. aldamana Barneby (Plate CIX), three highly localized races of a rare dalea found hitherto only in s.-w. Edo. de Mexico and Guerrero, the first two in pine-oak woodland above 1000 m, the last in arid grassland at ± 400 m, where they flower primarily in the dry season. All are perennial and suffruticose, glabrous to the headlike spikes of bicolored (white and purple) flowers, which are subtended by persistent, inwardly silky bracts. The pineland varieties illustrated here are lowly plants, the mostly monocephalous stems rising less than 4 dm from the forest floor, although the main stems may be prostrate and much longer. They differ mainly in leaflet-number, var. hintoni, of Temascaltepec district in Mexico, having at least six pairs in most leaves, whereas var. subbijuga, of Sierra Madre del Sur in Guerrero, has at most four and usually only two or three. In both, however, the leaf is petioled. The var. aldamana, of the Balsas valley in Mina district in Guerrero, is a taller plant, with virgate, distally branching stems up to 1 m tall; its sessile leaves have 9-15 pairs of leaflets. — Inflorescences × 1; the rest × 5. var. hintoni: 1) flowering branchlet + detached cauline leaf; 2) stipules 3) flower + lower bract; 4) lower bract, ventral view; 5) interfloral bract, dorsal and ventral views; 6) calyx, laid open; 7) banner, profile and ventral views; 8) keel; 9) androecium. var. subbijuga: 1) flowering branchlet; 2) stipules; 3) leaflets, 3 dorsal view, 1 ventral; 4) outer bract, dorsal and 1/2-profile views; 5) inner bract, dorsal and ventral views; 6) flower + inner bract; 7) calyx, laid open; 8) keel; 9) androecium.

  • Taxonomy

    Dalea hintonii var. subbijuga Barneby

    Dalea hintonii Sandwith

    Dalea hintonii Sandwith var. hintonii

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  • License Statement

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  • Cite This Image

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  • Image Type

    Illustration