192 PENTANDRIA. DIGYMA. 



perpendicularly serrate, serratures mucronate, lateral leaf- 

 lets oblique at the base. Umbells axillary and terminal. 

 Involucrum of 1 or 2 minute leaves, but mostly wanting. 

 Involucell 5 and sometimes 6-leaved, ^acuminated. Um- 

 bellets numerous, many-floweied. Calix acute. Seeds 

 agreeably aromatic, with paler coloured ridges, and a 

 Suberose epispevm, intervals tuberculate. Hab. Abun- 

 dant around Philadelphia, in the marshes of the Delaware. 



2. brdbifera. Leaves various; in bulbiferous stems biter- 

 nate and very thin, in bulbiferous and umbelliferous stems 

 simply ternate, leaflets thicker, upon shorter peduncles, 

 linear sublanceolute, lacerately serrate; umbell terminal, 

 solitary, lateral branchlets bulbiferous. Obs. Stem low, 

 smooth, simple or trichotomous. Leaves in infertile bul- 

 biferous stems, more compound and slender, with very 

 long petioles, ultimate divisions sublanceolate-linear, with 

 very few serratures, in fertile stems the leaves have very 

 sliort petioles, petioles of the leaflets more than an inch 

 long. Primary umbell often opposite a leaf, the rest soli- 

 tary, terminal; lateral branchlets sliort and bulbiferous, 

 bulbs ovate axillary, covered by the dilated sheaths of the 

 leaves, often approximating so as to appear oppositely 

 imbricated, but where more distant, distinctly alternate. 

 General involucrum of the umbell I or 2-leaved, partial 

 about 5-'eaved. [I ab. On the banks of the Delaware near 

 Philadelphia; but rare. A genuine species, the fruit 

 scarcely distinguishable from that of C. muadata. 



Of this genus theie are but 3 species, the 3d. C. viroscy 

 is indigenous to Kurope. 



QTT, MYRRHIS. Jlorisoii. (Chervil.) 



<' Fruit sublinear, solid and angular, ridges 

 . a little acute, apex attenuated or crowned 



with the style. Universal involucrum none.'^ 



Sprengel. 



Species. 1. JI. canadensis. (Si'son canadense. L.) 

 Leaves ternate, leaflets ovate-acute, incisely and doubly 

 serrate, peduncles by pairs; umbells small and unequal. 

 2. bifida, Muhl. Spr. 



A genus of 16 sjiecies, according to Sprengel, chiefly 

 indigenous to Europe. 



278. =*URASPERMUM.t Myurhis. Michcmx. 

 Fruit sublinear, solid, acutely angular, cau- 

 date, and witliout striae; angles subsulcate, his- 



f So called trum the seed being caudate. 



