120 



(CONTRIBUTIONS FROM THK NATIONAL HKRHARIUM. 



Fi<i. ;tt.— Cynosfiadium pintmtum: 

 o, X 8; ft, X 10. 



(luiuliiloiiiM', Trxas, fovrrirjj,' liir^'o j)iit<'ln's of moist pnilrif land, and 

 al«>ii^' tlx* iniir<fir» of tliickets;" collect^ci by Llndlu'iini'i\ in 1845-4«I; 

 typo in Ih'ih. (Iray. 



Moi.st meadows, western Texas. 



S/it'i'iiimiK iwnmlrml: 



Tkxas: I.imlhehmr 4()4, in lH4ti; aloiiK tlu' Nupcch River, Wright 2:V1, in 184K; 

 I'rdn'tml Crwk, Wriuhl niHTi, in 1852; (JiiicHpif County, Jermtj 457, 712; 

 KerrCmnty, Ihlhr mw, June 2»>-.'{0, lHi»4. 



36. CYN08CIADIUM DC^. VxA\. Mem. 5: 44. 182!». 



Calyx teeth persistent. Kruit flattened laterally, ovate to ohlonj:, 

 glabrous. Carpel with piomiiuMit ril)s, laterals much the larg«'sl, 



forminjif a broad eorky marj?in (except (\ 

 pinmtfi(iti)\ a large group of strengthen- 

 ing (^ells in each rib, Stylopodium coni- 

 cal. Oil tubes solitary in the intervals, 2 

 on th<' commissural .side. Seed .somewhat 

 rtattened dor.sally, with plane face. 



Glabrous atmuals, with digitjitely orpin- 

 nately divided cauline leaves (leaflets linear 

 to narrowly lanceolate), mo.stly undivided 

 lower and ba.sal leaves, involucre and in- 

 volucels of linear bracts, and white flowersi. 



First species cited, Cynosdadiuw drgUatmti DC. 



A genus of 8 species, belonging to the .south central United States. 



Cauline leavt'.s digitate; fruit beaked 1. C. digiUUitin, 



Leaves j)innate; fruit not U'aked. 



Fruit with nearly ecjual rihs; the small ealyx teeth inserted some 



distance l>elow the base of the very prominent stylopodia ... 2. ('. pinruitmn. 

 Fruit with lateral ribs much the largest; the much larger calyx 



teeth inserted near the l)a.se of the less prominent stylopodia . 11 C. pumi'nm, 



1. Cynosciadium digitatum DC. Coll. Mem. 6: 45. pi. 11. fig. A. lH)i\l 

 Slender, 8 to dm. high; basal leaves linear-lanceolate, entire; 



cauline leaves palmately 3 to 5-parted; umbels irregular, mostly 8 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, '"aux environs du fleuve Arkansa;" collected by 



Nuttall; type in Herb. DC, duplicate in Herb. Philad. Acad. 

 Wet gronnd, 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, Reverchou, in 1877, 1879, 1881. 

 Mississippi: Meridian, Tracy 3262, in 1897. 



k 



