554 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
1. Tetraclea coulteri A. Gray, Amer. Journ. Sci. IT. 16: 98. pl. 41. 1853. 
Type LocALity: Mexico. 
Rance: Western Texas to southern Arizona and southward. 
New Mexico: Mangas Springs; south of Hillsboro; near White Water; Dog Spring; 
Organ Mountains; Tortugas Mountain; south of Roswell; Dayton. Rocky hills and 
canyons, in the Lower and Upper Sonoran zones. 
2. Tetraclea angustifolia Woot. & Stand]. Contr. U. 8. Nat. Herb. 16: 170. 1913. 
Type Locatiry: Plains south of the White Sands, Otero County, New Mexico. 
Type collected by Wooton (no. 403). 
Range: Known only from type locality, in the Lower Sonoran Zone. 
4. TRICHOSTEMA L. Butvue curts. 
Low shrub, 30 to 60 cm. high, sparingly puberulent or glabrate; leaves small, ovate, 
petiolate, entire; flowers in small axillary cymes on the upper part of the stems, becom- 
ing thyrsoid-paniculate; calyx campanulate, with 5 equal acute lobes; corolla with 
a short tube not equaling the calyx, the lobes longer than the tube; stamens with long 
capillary curved filaments 2 cm. long or more, much surpassing the corolla; style still 
longer; fruit of 4 coarsely reticulate-roughened nutlets. 
1. Trichostema arizonicum A. Gray, Proc. Amer. Acad. 8: 371. 1872. 
Type LOcALITY: Chiricahua Mountains, southern Arizona. 
Ranae: Southwestern New Mexico and adjacent Arizona and Mexico. 
New Mexico: Berendo Creek; Guadalupe Canyon. Mountains, in. the Upper 
Sonoran Zone. 
5. MENTHA L. Mint. 
Aromatic perennial herbs with toothed leaves, the small flowers in clusters in the 
axils of the leaves or forming terminal spikes or verticillate axillary clusters; calyx 
5-toothed, tubular or campanulate, 10-ribbed, the teeth equal or nearly so; corolla 
nearly regular, with short included tube and 5 lobes; stamens 4, erect, the anthers 
2-celled, the cells parallel; nutlets smooth. 
KEY TO THE SPECIES, 
Whorls of flowers all axillary........... 2202222000022 0 cece eee 1. M. penardi. 
Whorls of flowers in terminal spikes. 
Plants glabrous; leaves acute.............2..-0..-2-20..2222. 2. M. spicata. 
Plants canescent or tomentose; leaves obtuse................ 3. M. rotundifolia. 
1..Mentha penardi (Briq.) Rydb. Bull. Torrey Club 338: 150. 1906. 
Mentha arvensis penardi Briq. Bull. Herb. Boiss. 3: 215, 1895. 
TYPE LocALIry: Boulder, Colorado. 
Ranae: British Columbia and Nebraska to Arizona and New Mexico. 
New Mexico: Farmington; Tunitcha Mountains; Chama; Ramah; mountains 
west of Grants; Santa Fe and Las Vegas mountains; Albuquerque; Mimbres; Mangas 
Springs; Middle Fork of the Gila; Mesilla Valley; White Mountains; Roswell. Wet 
ground, from the Lower Sonoran to the Transition Zone. 
2. Mentha spicata L. Sp. Pl. 576. 1753. SPEARMINT, 
Mentha spicata viridis L. loc. cit. 
Mentha viridis L. Sp. Pl. ed. 2. 804. 1763. 
Type LocaLity: European. 
New Mexico: Santa Fe; Mesilla Valley; Anton Chico. 
A native of Europe, frequently cultivated and often escaped. 
