482 PATAGONIAN EXPEDITIONS I BOTANY. 



short, with a terminal, globose head of about 1 2 flowers. Calyx-segments 

 ovate, villous. Fruits unarmed. 

 E. Fuegia. 



22. AOENA PHILIPPI Dusen. (A. sericea Phil, non Jacq.) 



Cespitose, 24 cm. high. Leaves crowded, silky. Leaflets 5-7 pairs, 

 ovate, deeply incised-serrate, larger towards apex of leaf. Scapes long, 

 usually naked. Head globose. Fruits angular, slightly winged. Glo- 

 c India compressed. 



E. Fuegia. 



23. A. PINNATIFIDA Ruiz. & Pav. (Plate XIX.) 



Erect, silky. Leaflets 3-5 pairs, deeply 3~5-parted, the segments linear. 

 Flowers crowded in cylindrical spikes, the lower ones rather remote. 

 Stamens 5-10. Fruit armed all around with glochidia. 



(Chili) ; Magellan; S. Patagon., at head of Rio Sta. Cruz. (J. B. 

 Hatcher. In fruit Feb. 9-25.) Golfo de San Jorge. 



In some of the Hatcher specimens the leaflets are 8-9 pairs. 



A. PINNATIFIDA GLABRATA Speg. 



Upper surface of the leaves glabrous, obscurely fuscous-green, blacken- 

 ing when dry. 



Patagon., by Rio Sta. Cruz. 



24. A. PLATYACANTHA Speg. 



Cespitose perennial. Leaves odd-pinnate, with 6-9 pairs of leaflets ; 

 the lower entire, the upper i-2-partite, lanceolate, margin revolute, obtuse; 

 silky-villous beneath, smooth above. Scapes subvillous, capitate with 

 globose apex ; also often with a few flowers or bracts lower down. Fruit 

 tomentose, 2-4-angled, subulate, spinescent, the angles often with 2 super- 

 posed spines ; armed in the sinuses with small aculei. 



Patagon., by Magellan ; R. Sta. Cruz, and Golfo de San Jorge. 



A. PLATYACANTHA PARVIFOLIA Speg. 



Leaves fasciculate at top, with a broad pericladium ; petiole very short ; 

 leaflets 2-5 pairs, approximate, ovate, obtuse, mostly entire. 

 Patagon. ; by Golfo de San Jorge. 



