PENTANDRIA. DIGYNIA. 275 



c. Umbels perfect. Universalinvolucrum, and sometimes the 



partial, wanting. Fruit ovate, solid, d-costatc, ("Leaves 

 decompound. J 



202. SisoN. 203. Cnidium. 



d. Umbels perfect. Involucra generally wanting. Fruit 



corticate, solid, or compressed^ utriculate. 

 204. Smyrnium. 205, Cicuta, 



e. Fruit hispid, 



206. Daucus. 



f. Fruit pyramidal, rostrate, Involucrum 0, 



207. Myrrhis. 



a. Fruit subovate, costate, sulcate. Universal and partial 

 involucra various, 



203. SiuM. 209. CoNiUM, 



210. LiCUSTICUM. 



ii. Fruit compressed, jlat, often winged, Jnvolucra various. 



211. Heracleum. 213. Angelica. 



212. Pastinacao 2J4. Thapsia. 



186. APOCYNUM. L. 



Calyx very small, 5-cleft. Corolla campanulate ; 

 border with 5 short spreading or revolute lobes. Jn- 

 thers sagittate, connivent, cohering to the stigma by 

 the middle. Glandular teeth 5, acute, alternating with 

 the stamens, and opposite the segments of the corolla. 

 Styles obsolete; stigma dilated and conical at the 

 apex. Follicles 2, long, linear. Seeds comose. R. 

 Bro-wn in Mem. JVern. Soc. I. p, 67. JVutt. 

 Gen. I. p. 161. Lam. III. t. CLXXVI. f. 2. Boem. 

 ^ Schult, Gen. 742. Nat. Qrd. Apocine^ R. 

 Brown; (part of ApociNEiE Juss.J Lactescent 

 herbs. Dog^s-bane. — Indian-hemp. 



1. A. andros(smifolium L. : leaves ovate, smooth on both 

 sides; cymes lateral and terminal, smooth; tube of the co- 

 rolla longer than the calyx. Willd. Spec. I. p. 1259. R. 

 Brown in Wern. Trans. 1. p. 68. Mich. Fl. J. p. 121. 

 Pursh Fl. I. p. 179. Big. Bost. p. 61. Ejusd. Med. BnL 



