Comprehensive Description
provided by North American Flora
Porophyllum tridentatum Benth. Bot. Voy. Sulph. 30. 1844
A low undershrub; stem decumbent, much branched, usually less than 1 dm. high; leaves sessile ; blades fleshy, cuneate in outline, 0.5-1 cm. long, 3-cleft at the apex, with one conspicuous gland at the end of each lobe, often apiculate; heads short-peduncled and solitary at the end of the branches; involucre broadly campanulate or hemispheric, 8 mm. high; bracts oval, with scarious margins, with several glands near the apex; flowers about 40; corolla yellowish, 6 mm. long; tube shorter than the trumpet-shaped, nearly cylindric throat; lobes ovate; achenes 3.5 mm. long, sparingly hispidulous; pappus yellowish, 5 mm. long.
Type locality: Bay of Magdalena, Lower California.
Distkibution: Coast of Lower California.
- bibliographic citation
- Per Axel Rydberg. 1916. (CARDUALES); CARDUACEAE; TAGETEAE, ANTHEMIDEAE. North American flora. vol 34(3). New York Botanical Garden, New York, NY
