Senecio greggii Rydb.
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Authority
New York Botanical Garden. Herbarium of Dr. Per Axel Rydberg. Purchased, 1899. Contributions from the New York Botanical Garden.
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Family
Asteraceae
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Scientific Name
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Description
Species Description - Biennial or annual, with several stems from the base, perfectly glabrous in age; stems about 3 dm. high: leaves pinnately divided or the very first ones simple; basal leaves with 3-5 segments, the terminal one round and crenate, about 1 cm. in diameter; the lateral ones small, obovate; stem leaves with 7-9 small segments and more or less auricled at the base of the very short petiole: cyme compound; heads rather man\', only 5-7 mm. high; bracts about 20, linear-acuminate; the calyculatc ones minute and few; rays 8-10, about 3 mm. long and 1.5 mm. wide, 3-nerved: achenes angled and strigose.
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Discussion
This is nearest related to S. lobatus but smaller and characterized by the many stems from the same root, the few segments of the basal leaves, the small heads and the narrow bracts. Only Wright's specimens were collected in the region here treated. [Plate 5, f 8.]
Mexico : Santa Rosalia, Dr. Gregg (type in Torrey Herbarium). Texas: Near El Paso, 1851-2, C. Wright, 1413 ; between Frio and Nueces Rivers, 1880, E. Palmer, 754; Loredo to Frontera. Wright (Mexican Boundery Survey), 659 in part.
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Distribution
Mexico, Texas.
México Mexico North America| Texas United States of America North America|