3<X> PATAGONIAN EXPEDITIONS : BOTANY. 



12. J. MEXICANUS Willd. (^. compressiis H. B. & K.) 



Root creeping, compressed. Culms cespitose, 4-5 cm., striate, glabrous, 

 erect, compressed. Sheaths leafless, acute, pallid-fuscescent. Cyme lat- 

 eral, branching diffuse. Tepals lanceolate, acutely subulate, outer ones 

 slightly longer. Style long. Capsule triquetrous-oblong, acutish, equal- 

 ling the sepals. 



(S. Amer., Mexico) ; S. Patagon., in Isle Pavon, Rio Sta. Cruz, and 

 Rio Chico near Chonkenk-aike. 



13. J. MICROCEPHALUS H. B. & K. 



Creeping cespitiferous root. Ciilm terete, erect, 20-25 cm -> leafy. Leaves 

 terete, articulate, glabrous. Inflorescence terminal, cymose, with a i- 

 leaved involucre, resembling the leaves but much shorter. Flowers capi- 

 tately crowded in sessile glomerules. Tepals acuminate-cuspidate, sub- 

 equal, exceeding the outer trigonal obtuse capsule. Varies in height of 

 culm and size of inflorescence. 



(S. Amer.) ; N. Patagon., common in wet places near Carmen de 

 Patagones. 



14. J. PLANIFOLIUS Brown. 



Cespitose. Culm 25-45 cm. high, leafless. Leaves numerous, flat, 

 grass-like, 2-7 mm. broad, shorter than the culm, with long imbricating 

 2-ranked sheaths. Thyrse terminal ; bracts small, or 1-2 leafy. Globular 

 clusters of brown flowers at base and ends of the branches. Tepals 2 

 mm. long, acute. Stamens 3. Capsule mucronate, equalling the tepals. 

 Seeds numerous, ovoid, small. 



(New Zeal. ; Austral. ; Chili) ; N. Patagon. 



J. PLANIFOLIUS DEMISSUS Steud. 



Culm leafy below, naked above, 10-15 cm. high, i -several-headed. 

 Leaves herbaceous, plane, lanceolate, shorter than the culm. Sepals sub- 

 equal, the outer acute, the inner obtuse. Stamens 6. Seeds ovate, minute. 



Valdivia ; W. Patagon. 



15. J. PROCERUS E. Mey. 



Leafless (?). Scape smooth, soft (exceeding 60 cm.), finely striate, with 

 dense pith. Inflorescence subdecompound, subcymose, the lower rays 



