104 BOTANY OF LA SALLE COUNTY. 



ovate, narrowed to both ends, short-petioled; 

 flowers rather large, 15 to 20 in an umbel, G. 

 Pi.; 3 to 5 ft. Moist thickets. 



H. varieg-ata. Leaves 4 to 5 pairs, ovate to obo- 

 vate, short-petioled; umbels very compact; flow- 

 ers nearly W. 1 to 2 ft. Dry Woods. 



Y. verticilla ta. H/eaves thread-like, 3 to 6 in a 



whorl. Flowers G. W. Dry places. 

 ACERATES. Green Milkweed. Flower*, G. W. 

 Umbels compact. 



A. viridiflora. Stems several, 1 to 2 ft.; leaves 

 oval to linear, thick; umbels nearly sessile. 

 Sandy lands. 



Order 69.' GETIANA CEAE. Gentians. 

 GENTIANA. Gentian. Calyx 4 to 5 cleft; corolla 

 4 to 5 lobed with folds between lobes, B. or W. 



D. crinita. Smooth, 1 to 1^ ft., leaves lanceolate, 

 more or less cordate, P. G. or Br. G.; flowers 

 larg-e 2 in. long-. Vi. B. to B. Damp places. 

 Not common. 



G. quinqueflora. Slender, branching-, 1 to 2 ft; 

 leaves somewhat clasping-, lanceolate, 3 to 7 

 veined; flowers pale B. ; lobes of corolla bristle 

 pointed. 



G. puberula. Stems usually 1, erect, 8 to 16 in.; 

 leaves rig-id, narrow-lanceolate; flowers clus- 

 tered, brig-ht B. One of the last flowers of 

 autumn. Scarce. 



G. Andrewsii. Closed Gentian. Flowers look 

 like buds about to open. B. 



G. alba. Flowers crowded into a sort of head, W. 



or cream color. Corolla club shaped. 

 J'n. MENYAN THES. P. Buckbean. Flowers on 

 a naked scape. 



M. trifolia ta. Leaves of 3 oval leaflets. 



