WOOTON AND STANDLEY FLOEA OF NEW MEXICO. 463 



3. CHAMAENERION Adans. Fireweed. 



Perennial herb with several stems, 80 cm. high or less; leaves mostly lanceolate, 

 nearly entire, short-petioled ; flowers in terminal racemes; hypanthium tube little or 

 not at all prolonged; petals slightly irregular, rose purple; stamens in a single series, 

 the filaments dilated below; stigma with 4 divergent lobes; capsules linear-fusiform, 

 many-seeded, the seeds fusiform, comose. 



1. Chamaenerion angustifolium (L.) Scop. Fl. Carn. ed. 2. 1: 271. 1772. 



Epilohium angustifolium L. Sp. PL 347. 1753. 



Tyte locality: "Habitat in Euro pa boreali." 



Range: British America to North Carolina and California. 



New Mexico: Santa Fe and Las Vegas mountains; Mogollon Mountains; Black 

 Range; White and Sacramento mountains. Damp woods and open clearings, in the 

 Transition and Canadian zones. 



A common and rather showy plant in the higher mountains. It receives its com- 

 mon name from the fact that it is one of the first plants to spring uj? where forests have 

 been swept by fire, persisting in the "burns" until they are reforested. Tnis habit 

 of the plant results largely from the structure of its seeds, which are peculiarly adapted 

 to dispersal by wind, being furnished with tufts of down. 



4. EPILOBIXJM L. Willow-herb. 



Herbs. 80 cm. high or less, with alternate or opposite, narrow leaves and small, 

 axillary or racemose flowers; hypanthium tube jiroduced beyond the ovary; sepals 4, 

 deciduous; petals 4, obovate to obcordate; stamens 8; ovary 4-celled; fruit an elon- 

 gated linear-oblong 4-sided 4-celled capsule; seeds small, comose. 



KEY TO THE SPECIES. 



Annual ; stigmas 4-cleft 1. E. adenocladon. 



Perennials; stigmas entire or merely notched. 



Leaves linear, entire, cinereous 2. E. lineare. 



Leaves lanceolate to ovate, toothed, glabrous or nearly so. 

 Stoloniferous, low, 10 to 30 cm. high, simple or spar- 

 ingly branched 3. E. alpinum. 



Not stoloniferous, tall, 30 to 60 cm. high, much 

 branched. 



Leaves narrowly lanceolate 4 . E. fendleri. 



Leaves elliptic or ovate-lanceolate 5. E. novoviexicanum. 



1. Epilobium adenocladon (Hausskn.) Rydb. Bull. Torrey Club 33: 146. 1906. 

 Epilohium paniculatum adenocladon Hausskn. Monogr. Epilob. 247. 1884. 

 Type locality: Mountains of Colorado. 



Range: Wyoming and South Dakota to Utah and New Mexico. 

 New Mexico: North of Chama (Wooton 2736). Transition Zone. 



2. Epilobium lineare Muhl. Cat. PI. 39. 1813. 

 Epilobium palustre lineare A. Gray, Man. ed. 2. 130. 1856. 

 Type locality: New England. 



Range: British Columbia and New Brunswick to Delaware, Oklahoma, and New 

 Mexico. 

 New Mexico: White Mountains (Wooton 661). Transition Zone. 



3. Epilobium alpinum L. Sp. PL 348. 1753. 



Type locality: "Habitat in Alpibus Helveticis, Lapponicis." 

 Range : Arctic regions to Oregon, New Mexico, and New Hampshire ; also in Europe 

 and Asia. i 



