WOOTON AND STANDLEY FLOEA OF NEW MEXICO. 501 



6. ANTHOPOGON Necker. Fringed gentian. 



Annual or biennial herbs with opposite entire sessile leaves and large, terminal, 

 mostly 4-parted flowers; calyx relatively large, the lobes unequal, the inner broader 

 than the outer, scarious or hyaline-margined; corolla blue, showy, the tube campanu- 

 late-funnelform, the lobes large, rounded, fimbriate or lacerate, the sinuses n< it plaited; 

 stamens usually accompanied by a row of glands at the base of the filaments; capsule 

 stipitate, the seeds numerous. 



KEY TO THE SPECIES. 



Annual; flowers long-pedunculate 1. A. elegans. 



Perennial; flowers short-pedunculate, nearly sessile 2. . 1 . barbt llatus. 



1. Anthopogon elegans (A. Nels.) Rydb. Bull. Torrey Club 33: 148. 1906. 

 Gentiana elegans A. Nels. Bull. Torrey Club 25: 276. 1898. 



Type locality: Cummins, Wyoming. 

 Range: British America to Arizona and New Mexico. 



New Mexico: Rio Pueblo; Taos Mountains;. Santa Fe and Las Vegas mountains. 

 Meadows in the mountains, from the Transition to the Arctic-Alpine Zone. 



2. Anthopogon barbellatus (Engelm.) Rydb. Bull. Torrey Club 33: 148. 1906. 

 Gentiana barbellata Engelm. Trans. Acad. St. Louis 2: 26. 1863. 



Type locality: "On the alpine summit of Mount Flora, in the Snowy Range, Colo- 

 rado." 



Range: Colorado and northern New Mexico. 



New Mexico: Baldy; Costilla Pass; Brazos Canyon. Meadows in tin- mountains, 

 Canadian to Arctic-Alpine Zone. 



7. AMAEELLA Gilib. Gentian. 



Annuals, biennials, or perennials with opposite, entire, mainly sessile leaves and 

 rather small flowers, solitary or in cymes; flowers 4 or 5-merous; calyx usually small, 

 with imbricated equal or unequal lobes; corolla funnelform or salverform, the lobes 



entire or sparingly toothed, not plicate in the sinuses, often filamentous at the base; 

 ovary 1-celled; capsule usually sessile, the seeds numerous. 



KEY TO THE SPECIES. 



Calyx lobes very unequal, two of them large, foliaceous, ovate or 



oval, inueh broader than t ho rest and covering them 1. .1. heterosepala. 



Calyx lobes slightly unequal, all alike in general form, lanceolate 

 01 linear. 



Flowers yellowish, numerous, crowded, eihort-pediceled; 



leaves usually equaling or exceeding the internode , . 2. A. atrictiflora. 

 Flowers bluish, few, distinctly pediceled; middle internodes 



elongated, usually longer than the leaves :'•. -I. acopuloruin. 



1. Amarella heterosepala ( I'lirjeliu. i ( Heine, Leaflets 1: 53. 1904 



Gentiana heteroaepala Engelm. Trans. Acad. St. Louis 2: 215. 181 



Gentiana diategia Greene, Pittonia 4: 182. 1900 



Amareila distegia Greene, Leaflets L: 53. 1904. 



Type loi ujty: " Northern slope oi the Uintah Mountaii the Greal Sail 



bake, Utah." 



Range: Utah ami Colorado t.. New Mexico. 



New Mi Mice Tunitcha Mountains, Sandia Mountains; Hillsbon 

 yon; < louderoi't. Mountains, in the Transit ion Zone 



This species has broader leave ind i- more lender than our others, vrhile the 

 peduncles are much Idhger. 



