35O PATAGONIAN EXPEDITIONS I BOTANY. 



lanceolate-acute, crisp-undulate. Flowers dioecious, in a terminal panicle. 

 Perianth-segments oval, obtuse, entire. 



(Mendoza); Patagon., in mountain swamps near Rio Carren-leofu. 



8. RUMEX MAGELLANICUS Campd. (Monogr. Rum. 114). (Sp. dub.) 



Leaves oblong-linear, runcinate, crest-margined. Stip^lles 25 mm. 

 Flowers crowded, upper leafless. 

 Magellan. 



9. R. MAGELLANICUS Griseb. (1854). 



Leaves petiolate, lanceolate, wavy-crisp, attenuate-acute, rather rounded 

 at base. Floral verticils many-flowered, contiguous. Calyx-wings of 

 fruit elliptic, entire, faintly venous, all calliferous. "Inflorescence rich 

 purple-red." Indian name Calcatreo. 



Magellan, by Rio Sta. Cruz; valleys of N. Patagon., N. and E. Fuegia. 

 Falklands. 



10. R. MARITIMUS Linn. 



Leaves narrow-lanceolate. Floral verticils much crowded, leafy. Ped- 

 icels slender, exceeding the sepals, which are narrow, 2-4-toothed, calli- 

 ferous. 



(Europe); N. Patagon., S. Patagon., near RR. Sta. Cruz and Chico. 



R. MARITIMUS FUEGINUS (Phil). (R. fueginns Phil.) 



t 



Leaves linear, basi-truncate, rather obtuse. All the inner perianth seg- 

 ments calliferous (in Dusen's specimens; Phil, secus.). 



S. Patagon. ; E. Fuegia, "in almost all freshwater lagunes." (Dusen.) 



ii. R. PRATENSIS Mert. & Koch. (R. acutus L.) 



Lower leaves oblong-cordate, acute, waved, iipper lanceolate. Sepals 

 in fruit broad triangular-ovate, entire at apex, toothed below. 

 N. Patagon., by Rio Negro. "Perhaps introduced." (J. Ball.) 



12. R. PULCHER Linn. 



To 90 cm. tall. Branches divaricate, rigid. Leaves below cordate- 

 oblong to panduriform ; above, lanceolate ; uppermost linear. Floral 

 verticils remote, leafless at top. Calyx exceeding pedicels. Fruit- 

 sepals ovate-oblong, veiny, strongly toothed on margins, unequally cal- 

 liferous. 



