Daleae Imagines page 733 plate LXX

  • Title

    Daleae Imagines page 733 plate LXX

  • Creator(s)

    R. C. Barneby

  • Publisher

    The New York Botanical Garden Press

  • Description

    PLATE LXX Dalea similis Hemsl. and D. pectinata Kunth may be recognized by their foliage alone. The imparipinnate, densely pilosulous cauline leaves of D. similis are unique in the genus, as are the glabrous, comblike ones of D. pectinata. The latter inhabits dry oak-pine woods and open grasslands at about 1500-2500 m, flowering in summer and early fall; it is common in west-central Mexico, mostly north of the Neovolcanic Belt, from Guanajuato to interior Nayarit, north to San Luis Potosi, Aguas Calientes, and central Durango, but not reaching the Pacific slope. The full grown stems, herbaceous or weakly suffruticose, are virgate and densely leafy at and below the middle, sparsely leafy and paniculately branched toward the top, and full grown reach a stature of about 5-13 dm. The petals except for an often partly white (but rubescent) banner are commonly vivid blue or violet, but sometimes lavender. The winter-flowering D. similis is an exceptionally robust, virgate dalea, of unknown stature but at least a meter tall, softly gray-tomentulose up to the silky-barbate spikes of small, pale mauve flowers. It is known only from oak-pine forest near 2000 m on the Pacific slope of Sierra Madre Occidental in Sinaloa. Note the large basal pair of leaflets (fig. 2), an unusual feature shared by the sympatric but glabrous D. pulchella (Pl. CVII). Inflorescences and main cauline leaves × 1; pod × 10; the rest × 5. D. similis: 1) branch of panicle; 2) main cauline leaf; 3) flower + bract; 4) bract, ventral view; 5) banner, ventral and lateral views; 6) wing; 7) keel; 8) androecium. D. pectinata: 1) branch of panicle; 2) leaflets; 3) stipules; 4) lower bract, dorsal view; 5) flower + upper bract; 6) calyx, laid open; 7) banner, ventral view; 8) wing; 9) keel; 10) androecium; 11) pod.

  • Taxonomy

    Dalea similis Hemsl.

    Dalea pectinata Kunth

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  • Image Type

    Illustration