4IO PATAGONIAN EXPEDITIONS: BOTANY. 



the petals yellow, spatulate. Achenes few ; styles very short. (Fig. 69, 



central figure, h.] 



(Leaves like floating leaves of Potamogeton heterophyllus.'] 



S. Fuegia (Dusen) ; Punta Arenas (R. O. Cunningham) ; Falklands in 



fresh water. 



15. RANUNCULUS MACLOVIANUS d'Urv. 



Nearly stemless, appressed-pilose, the radical /eaves long-petiolate, 

 erect, reniform-rotundate, trifid or trilobate, the segments coarsely and 

 acutely toothed ; ped^mcles shorter than the leaves, rising from young 

 branchlets. Sepals villous. Petals spatulate, longer than the sepals, 

 yellow. Achenial head globose, rather glabrous ; styles short, hooked. 



Falklands, abundant in moist places. 



1 6. R. MONTTEANUS Phil. 



Glabrous. Stem creeping. Leaves long-petioled, 3-partite, the seg- 

 ments trifid; the subsegments incised mostly into linear pieces. Pedun- 

 cles solitary, axillary, equalling the petioles. Sepals 5, ovate-oblong. 

 Petals equalling them, oblong, yellow. Achenes inflated, in a globose 

 head, smooth ; styles as long as their achenes, incurved. 



Chonos Archip. 



17. R. MURICATUS LINN. Spiny-fruited Crowfoot. 



Subglabrous, branched, 30-60 cm. high. Lower leaves reniform to 

 round-cordate, on broad petioles, lobed, or crenate; upper 3-parted, 

 cuneate, subsessile. Flowers yellow; petals exceeding sepals. Fruit- 

 head globular, achenes compressed, with curved beak. 



(Old World; naturalized in Amer.); N. Patagon., in fields near 

 Carmen. 



* 



1 8. R. OLIGOCARPUS Speg. 



(Hecatonia.] Glabrous; root densely hairy. Leaves all radical and 

 subpeltate ; petioles very long, limbs suborbicular or obovate, obtuse, 

 entire or 3-crenate, rather fleshy. Scapes erect, half as long as the peti- 

 oles, sheathed and i-leaved at apex, with 1-2, i-flowered pedicels. 

 Flowers small, yellow, sepals ovate, petals linear ; stamens numerous ; 

 carpels 3-5, only i maturing, with hooked style. 



Chubut, wet places along Rio Carren-leofu. Like R. trullifolius, but 



