136 



Ijioad, with e\'icleiit ribs, ;nul no oil-bcariiiy^ la\er: seed-section 

 broadly oval. (Fig. Kjo. ) 



From Canada to Minnesota, and southward to the njouiitains of X. 

 Carolina. 



<). H. ranunculoides L. f. Snppl. 177. Usually floating: 

 leaves thicker, round reniform, 8 to 7 -cleft, with crenatc lobes: 

 peduncles 1 to 8 inches long, reHexed in fruit: capitate umbel 5 to 

 10-flowered: fiuit I to 1^4 lines broad, with rather obscure ribs, 

 and no layer of strengthening cells about the scetl cavity : seed- 

 section oblong. (Fig. 1«16.) — //. //a tans Torr. iK: Gray, Fl. i. 591). 



E. PonnsylTania to Florida, thtnt-e westward to Texas and California, 

 and up the coast to Oregon (Hotcell, HeinIcrHoti). 



T T Fridt larger (2 to "l^A. Hi"^'^ broaif)^ zi'it/i proftiincttf 

 secondary ribs and reticulations : the 2 to \-floxvcrcd nnibcl sub- 

 tended by an involucre of t-^co conspicuous bracts. 



7, H. Asiatica L. Spec. 284. Smooth or somewhat pubes- 

 cent: petioles (8 to 4 Inches or even a foot long) and peduncles 

 (2 inches or less long) clustered on creeping stems or runners: 

 leaves ovate-cordate, repand-toothed, thickish: seed-section nar- 

 rowly oblong. (Fig. 167.)- -//. repanda Pers. 



Maryland to Florida, and west to Texas. 



The petioles are verj' variable in length, an extreme form being 



^'ar. Floridana, in which the petioles are an inch or less 

 long, making the leaves appear in rather close clusters along the 

 lootstock, and the petioles and somewhat larger fruit are more or 

 less pubescent, 



Florida (A. H. Ci(rtin»), Polk county (./. IhnmtU ,'^'/(//7A ): and found also 

 in the West Indies and Guatemala ( Turrhhsiiu). 



o{). 1:R1GEXIA Xutt. Genera, i. 1.S7.— Low glabrous 

 nearly acaulescent plant, from a deep-seated tuber, \vith ternately 

 decompound leaves and oblong segments, no involucre (unless a 

 reduced leaf), invobicels of leafy linear or spatulate bractlets, and 

 white flowers in small compact umbels. 



1. E. bulbosa Xutt. 1. c. 18S. Span or so high: leaves 

 radical except those subtending the imperfect umbels: pedicels very 

 short: fruit 1 line long Ij^ lines broad. (Fig. 168.) 



"NV. Canada to Mr'.ryland, and wi-stward into th** Mississipi)i Valley, 



