540 



PATAGONIAN EXPEDITIONS I BOTANY. 



S. Patagon., by Hatcher at Cape Fairweather, and at Coy Inlet, Oct- 

 Nov., 1890, by Dusen at Sta. Cruz. It and O. enneaphylla form one 



section by reason of their ed- 

 ible root-stock. Some of the 

 flowers are long-styled, with 

 short and medium stamens ; 

 and others are short-styled 

 and long-staminate. (G. 

 M.) 

 FIG. 76. The leaves of B. Brown's 



Oxalis ladniata. Petals (in center); sepals and essen- specimens have petioles 8- 

 tial organs of long-styled flower (on left): of short-styled flower i 



8. OXALIS LAXA Hook. & Arn. (O. alsinodes Walp., O. micrantha 



Bert.) 



Stem low, simple, leafy. Leaflets 3, broad-obcordate, slightly hairy- 

 ciliate on upper, and densely so on the lower surface ; petioles hairy. Pe- 

 duncles twice as long as the leaves, hairy, bearing a lax, apical panicle. 

 Sepals hairy, narrow-lanceolate. 



(S. Chili) ; Chubut, in hilly parts. 



9. O. LORICATA Dusen. 1 



Rhizome thick, totally covered by persisting, suborbicular, imbricating 

 scales, the uppermost being intermixed with small, membranaceous ones. 



1 O. LORICATA Dusen n. s. 



Rhizoma durum, robustum, usque ad 12 mm. crassum, superne pauciramosum, tota longi- 

 tudine squamatum ; squama diutissime imbricatae, fusco-brunneae, fere orbiculares, usque ad 4. 5 

 mm. longae et 4 mm. latae, valde concavae, carnosae, glaberrimae, juniores saltern apicem versus 

 subcarinatae, omnes minute apiculatae, supremae squamis membranaccis, lanceolatis, glaberrimis, 

 integerrimis, squamis carnosis sublongioribus vel plerumque subbrevioribus, late uninervosis inter- 

 mixtis ; folia radicalia, usque ad 1 2 apice rhizomatis fasciculatim egredientia, petiolis gracilibus, 

 glaberrimis, usque ad 7 cm. longis, apice rosulatim foliosis ; foliola 812, conduplicata, emargi- 

 nata, planefacta, obcordata, usque ad 1 1 mm. longa et 7 mm. lata, utroque latere siccitate minu- 

 tissime scrobiculata ; pedicclli petiolis aequilongi, glaberrimi, uniflori, circiter 1 5 mm. infra florem 

 bracteis binis, breviter ovatis, subacutis, margine pilosis praediti ; sepala lanceolata vel late lanceo- 

 lata, glaberrima ; caetera ignota. 



Hab. Patagonia australis, Cerro Toro, supra terminum silvae (19/3, 1897); et secus Rio 

 Chubut. 



