Senecio millelobatus 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 - Annual or biennial, perfectly glabrous or slightly floccose at the base of the leaves: stem branched, 3-5 dm. high, very leafy: all leaves pinnately divided, 3-7 cm. long, lanceolate or oblanceolate. in outline; segments 13-23, obovate, 3-10 mm. long, lobed or cleft into oblong or ovate lobes; the upper segments more or less confluent: cyme compound: heads about 8 mm, high; bracts oblong-lanceolate, acuminate, 12-15 in number; calyculate ones minute and few: rays 5-8 mm. long and 1.5-2 mm. wide: achenes very scabrous on the angles. This is nearest related to the preceding and to S. lobatus but is easily distinguished by the numerous and lobed or cleft segments. It may be related to 5. Tampicanus which I have not seen, but that species is described as having only 4 or 5 pairs of segments and glabrous achenes. [Plate 5, f. 11.]
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Discussion
New Mexico: Hills on the Limpia, 185 1-2, C. Wright, 1287 (type in the Torrey herbarium) ; P. V. Le Roy.
Texas: Lower Rio Grande, 1852, Pany (Mexican Boundary Survey), 658.