Old. 2.] PENTANDRIA DIGYNIA. 43 



keeled ribs ; interst. deep, acutangular ; border 0. CaL 

 minute, pointed. Pet. inversely heart-shaped, very slightly 

 irree-. Fl. recept. 0. FL all perf., scarcely radiant. 



158. IMPERAToRIA. Seeds orbic. with a notch at each end, a 



little convex, with 3 prom, dorsal ribs ; border dilated, flat, 

 even. CaL 0. Pet. inversely heart-shaped, scarcely irreg. 

 Fl. recept. 0. Fl. all perfect, slightly radiant. 



168. SELlNUM. Seeds ellipt. slightly convex, with 3 acute dorsal 



ribs ; border dilated, flat, even. Cul. minute, pointed, spread- 

 ing. Pet. inversely heart-shaped, involute, equal. Fl. recept. 

 obsol. Fl. reg. nearly all perfect. 



159. ANGELICA. Seeds ellipt.-obl. convex with three dorsal 



wings; border narrow, flat, even. CaL 0. Pet. lanceol. flattish 

 undiv. contracted at each end, equal. Fl. recept. thin, wavy, 

 narrow, perm. Fl. all perf. reg. 



160. LIGuSTICUM. Seeds obi. convex, with 3 dorsal and 2 mar- 



ginal equal wings. CaL small, pointed, erect ; broad at the 

 base. Pet. ellipt., flattish, undiv., contracted at each end, equal. 

 Fl. recept. 0. FL all perf. and reg. 



G. Fruit thin and almost flat, compressed transversely, without 

 dorsal wings. 



169. PEUCEDANUM. Seeds broadly ellipt. notched at each end, 



a little convex, with 3 slightly promin. ribs; interst. striated ; 

 border narrow, flat, even, smooth, and entire. CaL pointed, 

 ascending. Pet. all very nearly equal. Fl. recept. 0. FL 

 reg. imperfectly separated. 



170. PAST1NACA. Seeds ellipt.-obov. with a slight notch at the 



summit, very nearly flat, with 3 dorsal ribs, and 2 marg. ones ; 

 border narrow, flat, thin, even, smooth and entire. CaL very 

 minute, obsol. Pet. broadly lanceol. involute, equal. Fl. re- 

 cept. broad, orbic, wavy, rather thin, concealing the calyx. 

 FL reg. uniform, perfect. 



171. HERACLEUM. Seeds inversely heart-shaped, with a notch 



at the summit, very nearly flat, with 3 slender dorsal ribs, 2 

 distant marginal ones, and 4 intermediate, depressed, coloured 

 abrupt lines from the top; border narrow, slightly tumid, 

 even and smooth, entire. CaL of 5 small, acute, evanescent 

 teeth. Pet. obcordate, radiant. FL recept. wavy, crenate, 

 obtuse. FL separated. 



172. TORDYL1UM. Seeds orbic. nearly flat, roughish, without 



ribs; border tumid, wrinkled or crenate, naked or bristly. 

 CaL of 5 awl-sh. unequal teeth. Pet. inversely heart-shaped, 

 radiant, variously uneq. and irreg. FL recept. 0. Fl. sepa- 

 rated. 



