Cryptotje.ma. UMBELLIFERiT:. 013 



v-ith 4 vittje. Seed teretely convex, nearly plane on the face. — A tali ami 

 slender perennial glabrous herb. Leaves simply teniately divided ; the 

 segments very long, linear, entire ; the under surface prominently 3-.5-nerved : 

 upper ones undivided. Umbels with lon^i; slender rays. Involucre of 2-4 

 subulate leaves, or nearly wanting. Involucels 5-G-leaved. Flowers 

 white. 



N. longifulium. 



Swamps near Newbem, North Carolina, Mr. Cromn ! Dr. Loomis ! 

 Middle Florida, Mr. Croom! Sept. — Sitrns ,'5-4 feet hich, smaller in 

 diatnetcr than a crow-quill at the base, ])rominently striate al)ove. Radical 

 leaves on narrow petioles, which are a f(X)t or more in length, and scarcely 

 at all dilated at the base : segments 5-8 inches long, and l-2i lines wide, 

 tapering at each end, strongly margined, and marked with (usually 3) thick 

 pale nerves underneath. Rays of the umbel 10, about 2 inches long. Fruit 

 (not mature) about li line in length, glabrous, crowned with the large stylo- 

 podium, and persistent calyx-teeth. — Except in the fruit, this |»lant agrees so 

 minutely with the descii])tion of Pcucedanum ternatum, JShH. fitti. 1. p. 

 182 (now referred to Archemora), and being also abundant near iN'ewbern, 

 the original locality of that plant, that we had supposed it must be the same, 

 aTtributinff the discrepancy in the fruit to our specimens not being suffi- 

 ciently mature ; but Mr. Nuttall and Dr. Pickering, having compared the 

 two plants, assert that they are totally distinct. We have not seen the 

 Archemora ternata ; but the present plant cannot belong to that genus, nor to 

 any other with which we are ac(|uainied. Perhaps it rather belongs to the 

 tribe Seselinea- than to Ammineie. 



1.5. CRYPTOTjENIA. DC. mem. Umh. p. 42, S^- x>ro(lr. 4. ;?. 118. 



Margin of the calyx obsolete. Petals obcordate, with an indexed narrow 

 point. Fruit linear-oblong, or ovate-oblong, contracted at the sides, crowned 

 with the short stylopodium and straight styles. Carpels witli 5 equal fili- 

 form obtuse ribs ; the lateral ones nearly marginal. Vittae very narrow, one 

 beneath each rib and one in each interval. Seed somewhat teretely convex ; 

 the face slightly concave. Carpophore free, 2-cleft. — Perennial glabrous 

 erect herbs. Root consisting of fasciculate fibres. Leaves 3-parted ; the 

 segments ovate, entire, or (particularly the radical ones) 2-3-lobed, doubly 

 serrate, with coarse mucronate teeth. Umbels numerous, somewhat pani- 

 cled. Pi-ays of the umbel and umbellets very unequal. Involucre none. 

 Involucels few-leaved. Flowers white. 



•^ 1. C. Canadensis (DC.) : umbels opposite the upper leaves and terminal; 

 fruit oblonsr-elliptical.— X)C. .' frodr. 4. p. 119; Hook. .' Jl. Bor.-Am. 1. p. 

 262 ,• Darlinst.fl. Cest. p. 169. Sison Canadense, Linn.! spec. 1. p. 252; 

 Michx. I Jl. 1. p- 168 ; Bigel. Jl. Bost. ed. 2. p. 114. Slum Canadense, 

 Lam. diet. 1. p. 407. Chaerophyllum Canadense, Pers. sijn. 1. p. 320 ; 

 Pursh, Jl. 1. f. 195 ; Ell. sTc. 1. p. 358. Myrrhis Canadensis, yutt. ! gen. 

 1. p. 192 ; Spreng. in Schult. syst. 6. p. 516 ; Torr.! Jl. 1. p. 310. Myrrhis 

 Canadensis trilobata, iV/om. //ts<. 9. <. 11, /. 4. 



Woods and shady rich soils, Canada! to Georgia and Louisiana! June- 

 Sept.— Stem 2 feet high, branching above. Leaves membranaceous ; the 



