PENTANDRIA. DIGYXrA. 185 



the lamina, and nearly the length of the peduncle. Invo- 

 lucrum none Radii 4 to 6, very short; (so as to render 

 the umbell in appearance simple or conglomerate ) In- 

 volucell 5 to 7 parted, on one side, segments lanceolate. 

 Central flowers of the umbellet pedunculate, small and 

 masculine; fertile flowers white, equal, subsessile, scarce- 

 ly longer than the involucell. Petals roundish oval, apex 

 inflected. Calix minute, 5-toothed Styles fiiifornij per- 

 sistent. Fruit large, subelliptic and compressed, with 7 

 or 8 conspicuously alated ridges. Perfect seed sublinear, 

 with 4 secondary wings, imperfect with 3. Alse undu- 

 lated, intervals flat, commissure naked, (the margin not 

 extending to the centre, so as to cover the seed) marked 

 with 3 nearly central longitudinal lines- Axis insepara- 

 ble from the fruit! — II ab. On the open plains of the Mis- 

 souri, commencing 40 miles below the confluence of 

 White river. Flowering time May and June. 



A genus of 6 or 7 species, indigenous to the south of 

 Kurope and Northern Africa. 



269. LIGUSTICUM. L. (Lovage.) 



FrmY oblong, corticate ^qcI <»wit!i 5 acute 

 rid.^rs and 4 grooves/*! Jussieu. Sprengel. 

 '' Involucriim ui]iversal and partial, many-leav- 

 ed." Sp. 



Leaves decompounded, for tlie most part tcrnately di- 

 vided. Oalix often 5-toothed? 



Species. 1. L. scoiicum. In Canada. 

 Almost exclusively an European genus. 



270. ANGELICA. L, 



*f Fruit elliptic, compres.scd. somewliat solid, 

 and corticate, ridges 3. dorsai acute, intervals 

 grooved, margin alated. Invohicrum universal 

 none." Sprengel. 



t Many authors describe the seed, as having 5 grooves, which 

 is impossible in tlie nature of umbelhferous seeds, as they are 

 all referrible to a structure of 5 primary ridges, viz. 1 dorsal, 



2 lateral, and 2 marginal; when inlaid witli secondavyrXd^&s the 

 grooves are either obliterated, or produced comparatively by 

 the depression or obliteration of the primary elevations; as 

 these never exceed 4, so the intervening grooves, must ever be 



3 or 4, or if the grooves were double, their number wov.ld be 

 6 or 8, but never 5. 



K 2 



