Daleae Imagines page 711 plate LIX

  • Title

    Daleae Imagines page 711 plate LIX

  • Creator(s)

    R. C. Barneby

  • Publisher

    The New York Botanical Garden Press

  • Description

    PLATE LIX Dalea reverchoni (Watson) Shinners and D. tenuis (Coulter) Shinners, small prairie-clovers endemic to limestone hill and plateau country in centr. and w.-centr. Texas. Both have green glabrous or inconspicuously pilosulous, prominently dotted foliage contrasting with silvery calyces and vivid magenta- or rose-purple flowers opening in early summer, rarely again in fall. The seldom collected D. reverchoni, known from only two stations within a radius of 60 km w. and s.-w. of Fort Worth, is about 2 dm tall and has primary cauline leaves of seven or nine leaflets; the subsessile spike becomes loose in age, and the deeply cleft calyx is tomentulose all over with antrorsely subappressed and entangled hairs. The more widely dispersed D. tenuis, which extends outward from a center of abundance on Edwards Plateau n. nearly to Red River and s. to Balcones Escarpment, is up to 4-5 dm tall and has primary leaves of either three or five leaflets; the pedunculate spike is permanently condensed and conelike and the calyx has teeth dorsally glabrate but margined with a fringe of an- trorse hairs while the tube is silvery-pubescent, at least on the five bluntly prominent angles, with sharply deflexed hairs. — Habit × 1; the rest × 5. D. reverchoni: 1) top of fruiting stem; 2) stipules; 3) leaflets; 4) flower at early anthesis; 5) calyx, laid open; 6) petals, the banner (center) in ventral view; 7) fruiting calyx; 8) pod, profile and seen from above. D. tenuis: 1) top of fruiting stem; 2) leaflets; 3) bract, ventral and dorsal views; 4) flower at late anthesis; 5) calyx of same, laid open; 6) fruiting calyx; 7) petals, the banner, center, in ventral view; 8) androecium; 9) pod.

  • Taxonomy

    Dalea tenuis (J.M.Coult.) Shinners

    Dalea reverchonii (S.Watson) Shinners

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  • Image Type

    Illustration