WOOTON AND STANDLEY FLOEA OF NEW MEXICO. 559 



13. MONARDA L. Horsemint. 



Annual or usually perennial herbs, 30 to 60 cm. high, with petioled leaves, the 

 flowers in crowded verticillate headlike clusters, these forming either terminal heads 

 or a series of clusters in the axils of the upper leaves and surrounded by conspicuous, 

 often colored bracts; calyx tubular, 15-ribbed, 5-toothed, the teeth about equal; 

 corolla flesh-colored, rose, or purplish, 2-lipped, the upper lip arched, the fower 3- 

 lobcd; anther-bearing stamens 2, 2 rudimentary filaments present or wanting; nutlets 

 smooth. 



KEY TO THE SPECIES. 



Flower clusters terminal and solitary; flowers rose purple. 



Stems and petioles villous-hirsute, the former especially so 



below the nodes 1. M. comata. 



Stems and petioles finely strigose or puberulent. 



Plants pale green; leaves finely puberulent, velvety to 



the touch, especially beneath 2. 31. menthaefolia. 



Plants bright green; leaves glabrous, in the dried speci- 

 mens feeling papery to the touch 3. M. stricta. 



Flowers in several verticillate glomerules in the axils of the up- 

 per leaves, mostly pale. 

 Calyx lobes triangular, acute, about as long as the width of 

 the tube (long-ciliate) ; bracts conspicuously velvety, 



whitish or rose purple above 4. M. lasiodonta. 



Calyx lobes narrowly subulate-aristate, several times longer 



than the width of the tube; bracts mostly greenish, 



not conspicuously velvety. 



Bracts lanceolate, tapering into the aristate apex, green; 



calyx teeth, petioles, and bases of leaves sparingly 



or not at all ciliate; plants stout 5. M. tenuiaristata. 



Bracts ovate to oblong, abruptly aristate, sometimes 

 purplish; calyx teeth densely long villous hirsute, 

 the petioles and bases of the leaves sparingly so; 

 plants rather slender 6. J/, pectinata. 



1. Monarda comata Rydb. Bull. Torrey Club 28: 502. 1901. 

 Type locality: Wahatoya Creek, Colorado. 



Range: Colorado and northern New Mexico. 



New Mexico: Gallinas Planting Station; Sierra Grande. Open slopes, in the Tran- 

 sition Zone. 



2. Monarda menthaefolia Graham, Edinburgh Phil. Journ. 1829: 347. 1829. 

 Type locality: "Between Norway House and Canada," British America. 

 Range: Arizona and New Mexico and northward. 



New Mexico: Rito de Frijoles; Chama; Santa Fe Canyon; Middle Fork of the Gila. 

 Mountains, in the Transition Zone. 



The distinctions between this and the next are so slight that it is doubtful whether 

 they sho'dld be kept separate, but the various species of this group are all so closely 

 related that they are separated with difficulty, and then only with large series of 

 specimens. 



3. Monarda stricta Wooton, Bull. Torrey Club 25: 263. 1898. 



Type locality: On the divide 9 miles northeast of the Mescalero Agency, White 

 Mountains, New Mexico. Type collected by Wooton. 

 Range: Colorado and New Mexico. 



