126 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
either sessile or with very short rays; involucels as long as umbellets; 
fruit little more than 2 mm. long, nearly sessile. 
Type locality, ‘‘at and near the top of Mount Dana,” California, at 
3,900 meters altitude, forming large dense convex mats among the 
rocks; collected by Brewer, nos. 1789, 2717, June, 1868, in flower; 
type in Herb. Gray. Associated in the original description with the 
type specimens is Lemmon 1424, August, 1878, in fruit. 
Specimens examined: 
CaLirorNiA: Type locality, Lemmon, September, 1877, and in 1898. 
40. EURYTAENIA Torr. & Gray, Fl. 1: 6383. 1840. 
Calyx teeth prominent. Fruit strongly flattened dorsally, ovate, 
minutely scabrous. Carpel with dorsal and intermediate ribs approx- 
imate and filiform (rarely slightly winged); laterals very prominent, 
thick-winged (prominently nerved on the commissural side), but with 
Fic. 41.—Eurytaenia texana: a, b, x 8. 
thin margins contiguous with those of the other carpel; all (especially 
the laterals) with prominent groups of strengthening cells. Stylo- 
podium depressed. Oil tubes very broad, filling the intervals, 2 
remarkably broad ones on the commissural side. Seed face plane. 
Glabrous (or somewhat scabrous especially on the rays) branching 
herbs, with pinnately dissected leaves, involucre and involucels of 
usually 3-cleft bracts, and white flowers. 
A monotypic genus belonging to the sandy soils of eastern Texas 
and adjacent Indian Territory and Oklahoma. 
1. Eurytaenia texana Torr. & Gray, Fl. 1: 633. 1840. Fia. 41. 
From 3 to 8 dm. high; leaflets long, narrowly linear to oblong, 
entire, serrate, toothed, or even incised; umbels 8 to many-rayved; 
rays 2.5 to 6 cm. long; pedicels very short; fruit 4 mm. long. 
Type locality, Austin, **Texas;” collected by Drummond; type in 
Herb. Gray. 
