30 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



1. Selaginella rupincola Underw. Bull. Torrey Club 25: 129. 1898. 



Type locality: "On perpendicular rocks, Organ Mountains." New Mexico. Type 

 collected by Wooton (no. 124). 



Range: Mountains of New Mexico and Arizona. 



New Mexico: San Luis Mountains; Dog Spring; Organ Mountains. On rocks and 

 ledges, in the Upper Sonoran Zone. 



2. Selaginella densa Rydb. Mem. N. Y. Bot. Gard. 1: 7. 1900. 

 Type locality: "Little Rocky Mountains," Montana. / 

 Range: Montana and western Nebraska to New Mexico. 



New Mexico: "Winsors Ranch; Hillsboro Peak. In the Transition Zone or higher. 



3. Selaginella wrightii Hieron. Hedwigia 39: 298. 1900. 

 Type locality: Western Texas. Type, Wright's no. 828. 

 Range: Western Texas and New Mexico to Mexico. 

 New Mexico: Lakewood; Las Vegas. 



4. Selaginella mutica D. C. Eaton; Underw. Bull. Torrey Club 25: 128. 1898. 

 Type locality: "New Mexico." 



Range: Colorado to Arizona and New Mexico. 



New Mexico: Pecos; Canada Alamosa; Organ Mountains. Damp cliffs in the 

 mountains, in the Upper Sonoran Zone. 



5. Selaginella underwoodii Hieron. in Engl. & Prantl, Pflanzenfam. I 4 : 715. 1901. 

 Selaginella rupestris fendleri Underw. Bull. Torrey Club 25: 127. 1898. 

 Selaginella fendleri Hieron. Hedwigia 39: 303. 1900, not Baker, 1883. 



Type locality: New Mexico. Type collected by Fendler (no. 1024). 



Range: Colorado, New Mexico, and southward. 



New Mexico: Winsors Ranch; Folsom; Ramah; Mogollon Mountains; Black Range; 

 Bear Mountain; Organ Mountains; White Mountains. On rocky walls and ledges 

 in the mountains, in the Upper Sonoran, Transition, and Canadian zones. 



Subkingclom SPERMATOPHYTA. Seed-bearing 



plants. 



Class 1. GYMNOSPERMAE. 

 Order 5. FINALES. 



KEY TO THE FAMILIES. 



Leaves needle-like; carpellary scales with bracts, 



never peltate; ovules inverted ; cones dry 6. PINACEAE (p. 30). 



Leaves scalelike or awllike; carpellary scales without 



bracts, fleshy or peltate; ovules erect; cones 



berrylike 7. JTINIPERACEAE (p. 35). 



6. PINACEAE. Pine Family. 



Large evergreen trees with needle-shaped leaves; infertile flowers in short catkins; 

 fertile flowers in scaly aments, becoming cones, with 2 or more ovules at the base of 

 each scale; fertile scales numerous, spirally imbricated. 



KEY TO THE GENERA. 



Leaves fascicled, inclosed by sheaths at the base, at least 



when young; cones maturing the second year 1. Pintjs (p. 31). 



Leaves solitary, not sheathed; cones maturing the first 

 year, 



