MACLOSKIE I ROSACE^E. 483 



25. AC^ENA PCEPPIGIANA Gay. 



Villous, cespitose. Stems simple, strict. Leaflets 5-7 pairs, silky 

 underneath, 5-partite, segments ovate-oblique. Spike interrupted, the 

 lower flowers few, remote, the upper agglomerate. Stamens 2, short. 

 Stigmas patelliform, fimbriate. Fruits very small, ovate-globose ; spines 

 pyramidal, unequal, sparingly glochidiate. 



(Chili) ; by Hatcher in S. Patagon., on pampas near Coy Inlet. The 

 leaves are crowded at the base, having many obscure lobes. The flowers 

 are in a terminal, and 23 smaller subterminal spikes. 



26. A. PULVINATA O. Ktze. 



Stems many, short, densely pulvinate, 5-10 cm. high, at base covered 

 by old sheaths, upwards having 23 white, silky leaves, each having 35 

 leaflets ; these are trisect with subulate segments. Petiole i cm., with a 

 basal sheath. Scape 3 cm., leafless, or i -leaved, with i subulate bract. 

 Head globose, lo-flowered. Calyx- segments white-silky, with long hairs. 

 Fruit triquetrous-obovate, glabrous, with very short glochidia on all sides. 



(Argentina) ; Patagon. (See A. ccespitosa Gill.) 



27. A. PUMILA Vahl. 



Glabrous. Root descending. Stem short, 3 cm., simple. Leaflets 10-12 

 pairs, small, obliquely ovate, obtuse, crenate-serrate, coriaceous, margins 

 recurving. Scape with a slender spike. Calyx-lobes oblong-obtuse, pilose 

 above. Stamens 4, short. Fruit with short glochidia all round. Stigma 

 depressed, fimbriate. 



"A pretty little species; with spike elongated." 



Magellan, Desolation I., Fuegia to Hermite I. 



28. A. SERICEA DC. 



Leaflets obovate, incise-toothed, pubescent, silky underneath. Flowers 

 in a crowded, cylindrical spike, on a decumbent stem. Corolla sympetal- 

 ous, rotate. Calyx glochidiate all round. "Fruit elliptical, 6 by 3 mm., 

 obscurely 3-4-gonal, angles minutely i-4-spinuligerous, faces tomentosu- 

 lous with sparing, minute aculei." (Speg.) 



S. Patagon., at Puerto Deseado ; by Rio de Sta. Cruz. 



