24 PATAGONIAN EXPEDITIONS: BOTANY. 



b. Anthers 5. Internodes 12 mm. frustillata. 1 



b2. Anthers 3-4. Internodes 9 mm. patagonica. 1 



A4. Dioecious shrub. Sheath bifid, partly ending in a subulate leaf. Male catkins solitary 

 at joints. andina. 



Add Macl., p. 145: 



EPHEDRA ANDINA (Poepp.) Stapf. 



Dioecious branching shrub, erect or climbing, branches tuberculate 

 sheaths bifid, segments ending in a short subulate leaf. Male catkins 

 mostly solitary at the joints ; anthers 5-4, subsessile, common stipe with 

 a longer involucel. Female catkins i or 3, ovate oblong, 2-flowered, 

 scarious margined, involucres 3-5, bifid. Fruits oblong, dorsally convex ; 

 white or red. 



N. Patagon. ; Territory of Neuquen. Peru. D. 



Add Macl., pp. 144, 145: 



E. AMERICANA H. & B. 



Mid-sized tree, branches erect or spreading, with crowded leaves ; upper 

 branches subdistichous, thick, rigid; leaves linear, acute, mucronate; the 

 upper leaves rather obtuse, sessile, strictly decurrent, marginally yellowish. 

 Male catkins numerous, short, sessile, spreading; thick, or oblong- 

 cylindric, near ends of branches ; antheriferous bracts broad-ovate, acute. 

 Fruits few in a spike, oval-globose, apiculate. Leaves 15-28 mm. by 

 2 mm. 



S. Chili. 



E. AMERICANA H. & B. var. HUMBOLDTII Stapf. Gatt. Ephedra, p. 85. 



N. Patagonia, by the lower part of Rio Negro ; the Cordillera of Ecuador, 

 Peru, Bolivia and Argentina. 



E. AMERICANA H. & B. var. RUPESTRIS Stapf. Gatt. Ephedra, p. 86. 



Add Macl., p. 145: 



E. NANA Dus. in Gefasspfl. Magellan., p. 235, Taf. XI, Fig. 1-8. 



E. Fuegia in the steppe, but very rare ; South Patagonia, common in the 

 steppe near the Atlantic Coast, sometimes abundantly, besides here and 

 there even in the western parts of the steppe. 



1 Are these distinct? 



