234 NATURAL HISTORY OF PLANTS. 



polygamous. Stylopods more or less dilated at base, sometimes 

 undulate. Fruit ^ oblong-linear, produced above to long or very long 

 beak,^ compressed contrary to septum ; carpophore simple or 2-fid. 

 Primary ridges subequal rather prominent, sometimes rather broad. 

 Vittae in furrows solitary, thin, obscure or 0. Face of seed deeply 

 sulcate ; margins generally involute. — Annuals, glabrous or pubescent ; 

 leaves pinnately decompound ; umbels compound or rarely simple ; 

 involucral bracts 1 (or 0) ; bracteoles of involucels oo , entire or 

 dissected. (North hemisph, of old world.^) 



72 ? Ottoa H. B. K.^ — Flowers * generally polygamous (nearly of 

 Scandix or Chcerophylhim) , subasepalous ; petals oblong entire; point 

 long inflexed. Styles elongate slender capitellate; stylopods depressed 

 conical. Fruit nearly of Ohcerophyllum, oblong ; vittse in furrows 

 solitary; carpophore 2-partite. Face of seed concave sulcate. — A 

 glabrous perennial herb ; leaves ^ terete fistular transversely septate ; 

 umbels compound ; involucre and involucels 0.^ {Mexico, Columbia,^) 



V. HYDEOCOTYLE^. 



73. Hydrocotyle T. — Flowers hermaphrodite or polygamous; 

 receptacle variously sacciform. Calyx small or 0, inserted at margin 

 of receptacle with 5 petals, entire concave, acute or obtuse, in prae- 

 floration valvate or imbricate (Centella). Stamens 5, epigynous, 

 inserted under depressed disk. Germen inferior, 2-celled ; cells 

 1 -ovulate. Fruit shortly ovate, suborbicular or 2-dymous, much 

 compressed contrary to septum, often constricted at commissure ; 

 carpophore simple or rarely 2-fid, sometimes 0. Primary ridges little 

 prominent or nervelike subequal ; dorsal marginate ; intermediate little 



1 The central fruit of the umbellules is of et Godr. Fl. de Fr. i. 740.— Walp. i?^;?. ii. 421 ; 

 diflFerent form in Cyclotaxis (Boiss. Biagn. Or. v. 9G3 ; Ann. ii. 717, 718 {Cyclotaxis). 



X. 48 ; ser. 2, v. 101 ; Fl. Or. ii. 218). " Nov. Qen. et Sp. v. 20, t. 423.— DC. Prodr. 



2 From char, of heak 2 sect, are distinguished : iv. 136.— Endl. Gen. n. 4417.— B. H. Gen. 899, 

 1. Pecten (Dub. Bot, Gall.i. 2i0 ;— DC. Prodr. n. 75. 



221, sect. 1), beak ecostate and dorsallycom- * "White." 



pressed ; 2. Wylia (Hoffm. Umb. i. 3, t. 2 ; — ^ Eeduced to petal ? 



DC. loc. cit. sect. 2), beak subterete or laterally ? Perhaps better a sect, of Chcerophylhim, of 



compressed. singular habit (nearly the same as Crantzia 



3 fepec. about 9. Vent. Jard. Cels. t. 14.— to (Enanthe). 



Reichr. f. Ic. Fl. Germ. t. 2029, 2030.— Sibth. » Spec. 1. 0. cenanthoides H. B. K.— (Enanthe 



Fl. G.cBc. t. 28o.— Boiss. Fl. Or. ii. 914.— Gken. quiteusis SriiEXC. Syst. i. 888. 



