CvMOPTERUs. UMBELLIFKRyi*:. (i-iH 



nate and quinate ; segments ovale-lanceolate, coarsely and sparsely toothed, 

 prominently veined on both surfaces, cuneate and somewhat eon(hiriii ni th^ 

 base; the upper leaves with narrower sesinieiiis, and iiinnatilid-tooihcd ; um- 

 bel few- (8-10-) rayed; involucre none, or of 1 -2 minute leaflets; itivoUuf I 

 4-G-lcaved, about as lon^ as the undjcllets ; fruit broadly oval ; dorsal ridj^es 

 carinated ; the lateral ones broailly winijed. 



Sandy pine barrens, (ladsden County, Middle Florida, Dr. Chopnuin ! 

 Dr. Alexander ! Jiily-Sejjt. — Stem 2-3 feet high, scarcely iia thick as a 

 crow(|uill at the base. Radical leaves on petioles (i-8 inches loni; ; the seg- 

 ments nearly an inch lonff, with 3-4 strong acute teeth on each side ; the up- 

 per leaves ternatel}' divided, with small dce])ly toothed segments : petioles 

 slightly dilated at the base. Rays of the umbel l-lj inch long. Petals 

 broadly ovate, with a short incurved point. Styles half as long as the ovary, 

 recurved. Fruit 2i lines long ; the wings thin and nearly as broad as the 

 seed. VittK about 20 (8 on the commissure). — A very distinct species. 



25. CYMOPTERUS. Raf. in jour. phjs. 1819 ; DC. prodr. 4. p. 203 ; 

 NuU. in jour. acad. Philud. 7. p. 28. 



Margin of the calyx 5-toothed. Petals ovate or oblong, the ]ioint inflexed. 

 Fruit elliptical or oval. Carpels much compressed dorsally : the dorsal ribs 

 winged and undulate ; the alternate ones often obsolete or only slightly ele- 

 vated. Intervals with 2-4 vittffi. Commissure with 4-8 vittie. Carpophore 

 free or adnate. — Perennial glabrous herbs (natives of the Rocky Mountains 

 and the adjacent country), usually low, with short stems or root-stocks. 

 Leaves decompound ; the segments narro^v. Involucre usually none. In- 

 volucels many-parted, often unilateral. Flowers white or yellow. 



§ 1. Calyx-teeth subulate: pericarp thin: commissure uith about 8 vittee : 

 carpophore none. — Eucymopterus. 



1. C. glomeratus (DC.) : caudex somewhat elevated, bearing the leaves 

 and peduncles at the summit ; segments of the leaves oblong-linear ; invo- 

 lucels palmately 5-7-parted. — DC. j)rodr. 4. j)- ~^'^- Selinum acaule, 

 Pursh, Jl. 2. p. 732. Thapsia glomerata, NuU.! gen. 1. j). 184. Ferula 

 Palmella, Hook. ! fl. Bor.-Am. 1. p. 268. 



Plains of the Missouri (Bradbun/ .') and Arliansas; and on the Rocky 

 Mountains towards the sources of the Platte, Nuttall! Saskatchawan, 

 Drunmwnd ! April-May. — Root thick and fusiform. Plant 3-8 inches 

 high : caudex about an inch high, sometiines divided. Leaves on long 

 petioles, ternately divided, and bipinnatifiil. Rays of the umbel 4-f), 

 scarcely a quarter of an inch long. Flowers white; those of the centre 

 abortive, pedicellate ; the fertile ones nearly sessile. InvoluccUate leaflets 

 cohering at the base, and partly adnate to the rays of the umbeliets. " Petals 

 roundish-oval." Nutt. Fruit elliptical, nearly one-third of an inch long 

 when mature: wings thickened and somewhat spongy; the intermediate 

 ones of one carpel, and the central one of the other obsolete. Y\\\rv. 3-4 

 in each interval, and 8 or sometimes more in the commissure, frequently 

 anastomosing. 



§ 2. Calyx-teeth minute : pericarp somewhat corhy : commissure tcith 4 ntta > 

 carpophore none. — Phellopterus, Nutt. mss. 



