120 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Guadaloupe, Texas, covering large patches of moist prairie land, and 
along the margin of thickets;” collected by Lindheimer, in 1845-46; 
type in Herb. Gray. 
Moist meadows, western Texas. 
Specimens examined: 
Texas: Lindheimer 404, in 1846; along the Nueces River, Wright 232, in 1849; 
Pedregal Creek, Wright 1385, in 1852; Gillespie County, Jermy 457, 712; 
Kerr County, Heller 1943, June 26-30, 1894. 
36. CYNOSCIADIUM DC. Coll. Mém. 5: 44. 1829. 
Calyx teeth persistent. Fruit flattened laterally, ovate to oblong, 
glabrous. Carpel with prominent ribs, laterals much the largest, 
forming a broad corky margin (except C. 
pinnatum); a large group of strengthen- 
ing cells in each rib. Stylopodium coni- 
cal. Oil tubes solitary in the intervals, 2 
on the commissural side. Seed somewhat 
flattened dorsally, with plane face. 
Glabrous annuals, with digitately or pin- 
y y nately divided cauline leaves (leaflets linear 
7 to narrowly lanceolate), mostly undivided 
Fic. 34.—Cynosciadium pinnatum: ° . 
& b, x 10. lower and basal leaves, involucre and in- 
volucels of linear bracts, and white flowers. 
First species cited, Cynosctadium digitatum DC. 
A genus of 8 species, belonging to the south central United States. 
Cauline leaves digitate; fruit beaked ..................-----00c0e- l. C. digitatum. 
Leaves pinnate; fruit not beaked. 
Fruit with nearly equal ribs; the small calyx teeth inserted some 
distance below the base of the very prominent stylopodia ... 2. C. pinnatum. 
Fruit with lateral ribs much the largest; the much larger calyx 
teeth inserted near the base of the less prominent stylopodia . 3. C. pumi'um. 
1. Cynosciadium digitatum DC. Coll. Mém. 5: 45. pl. 11. fig. A. 1829. 
Slender, 8 to 6 dm. high; basal leaves linear-lanceolate, entire; 
cauline leaves palmately 3 to 5-parted; umbels irregular, mostly 3 to 
8-rayed; rays about 2.5 cm. long; pedicels very unequal, 6 to 20 mm. 
long; fruit ovate, 2 mm. long, contracted into a beak at summit; 
dorsal and intermediate ribs narrow, laterals broad and corky; calyx 
teeth minute, much shorter than the stylopodium. 
Type locality, ‘taux environs du fleuve Arkansa;” collected by 
Nuttall; type in Herb. DC., duplicate in Herb. Philad. Acad. 
Wet ground, Arkansas to Alabama and eastern Texas. 
Specimens examined: 
ArKANsAs: Near Little Rock, Coville 49, July 9, 1887. 
Texas: Near Hempstead, Hall 255, June 10, 1872; Colorado County, Joor, May 
27, 1876; near Dallas, Reverchon, in 1877, 1879, 1881. 
Mississtpp1: Meridian, Tracy 3262, in 1897. 
