WOOTTON AND STANDLEY—FLORA OF NEW MEXICO. 39 
3. Ephedra torreyana 8. Wats. Proc. Amer. Acad. 14: 299. 1899. 
Type Locauity: “New Mexico to 8. Utah.” 
RanGE: Colorado to California and Mexico. 
New Mexico: Carrizo Mountains; Farmington; Santa Fe; Albuquerque; Nara 
Visa; Organ Mountains; San Andreas Mountains; Dona Ana Mountains; White 
Sands; Roswell. Plains and low hills, in the Lower and Upper Sonoran zones. 
4, Ephedra trifurca Torr. in Emory, Mil. Reconn. 152. 1848. 
Tyre Locauty: “From the region between the Del Norte and the Gila, and the 
hills bordering the latter river to the desert west of the Colorado.”’ 
RanGeE: Colorado and Utah to northern Mexico. 
New Mexico: Mangas Springs; Gila; San Antonio; Carrizalillo Mountains; Dem- 
ing; Las Cruces; Organ Mountains. Plains and low hills, in the Lower and Upper 
Sonoran zones. 
Class 2. ANGIOSPERMAE. 
Subclass 1. MONOCOTYLEDONES. 
Order:7. PANDANALES. 
8. TYPHACEAE. Cattail Family. 
1.TYPHA L. Carta. 
Tall marsh plant with creeping rootstocks and glabrous erect terete stems; leaves 
narrow, flat, striate; flowers monccious, densely crowded in terminal spikes, the 
pistillate flowers below and the staminate above; ovary 1, stipitate, 1 or 2-celled. 
1. Typha latifolia L. Sp. Pl. 971. 1753. 
Type Ltocauitry: “ Habitat in paludibus Europae.”’ 
Ranae: Throughout most of North America; also in the Old World. 
New Mexico: Farmington; Shiprock; Pecos; Mangas Springs; Fort Bayard; 
along the Rio Grande from Albuquerque to El] Paso. In swamps and marshes, in the 
Lower and Upper Sonoran zones. 
The Mexicans use the stems for a thatch upon which to lay mud roofs. 
Order 8. NAIADALES. 
KEY TO THE FAMILIES. 
Gyncecium of distinct carpels; stigmas disklike 
or cuplike ............-.------------- 9. POTAMOGETONACEAE (p. 39). 
Gyncecium of united carpels; stigmasslender.. 10. NAIADACEAE (p. 41). 
9. POTAMOGETONACEAE. Pondweed Family. 
Aquatic herbs with jointed leafly stems; leaves sheathing at the base or stipulate; 
flowers perfect or unisexual, the perianth of 4 or 6 distinct valvate segments, or tubular, 
or none; stamens 1, 2, 4, or 6; ovaries 1 to 6, distinct, 1-celled, usually 1l-ovuled; 
fruit indehiscent. 
KEY TO THE GENERA. 
Flowers perfect, spicate; stamens 4............----------- 1. POTAMOGETON (p. 40). 
Flowers moncecious, axillary; stamen 1l...............--- 2. ZANICHELLIA (p. 40). 
