AND THE ADJOINING TKBU7TOEY. 213 



noti vidi — P. spinescens, Grill, in Hook. Bot. Misc. iii. 140, 

 differt statura minore, ramulis flexuosis, et (an semper ?) aphyllis. 

 Species est parum cognita, cujus exemplar uuicum incompletum 

 exstat in Herbario Kewensi, a Gillies ad Salto de lasAffuas prope 

 Mendoza ledum. 



I have not seen Acanthocladm tnicrophyllus, Griseb., to which 

 that author doubtfully refers P. spinescens, Gill. This appears 

 to be a true Polygala. 



Cabyophylle^;. 

 Silene antieeuina, L., var. ptebonetjba, nob. Frequent in 

 the valleys near Bahia Blanca (No. 116, G. C). Silene antirrhina, 

 L., is widely spread throughout both North and South America. 

 A large series of specimens in Kew Herbarium, including one 

 gathered at Bahia Blanca by Darwin, exhibits but trifling varie- 

 ties. The plant sent by M. Claraz differs remarkably in having 

 the veins of the calyx expanded into prominent herbaceous corru- 

 gated ridges. The calyx-teeth are also longer, and the solitary 

 capsule ovoid and not globose. Is this an instance in which a new 

 variety has been developed within the last half-century ? 



Cebastilm semiuecandeum, L. Bahia Blanca,by watercourses 

 (No. 108, G. C). 



Ceeastium Commeesonianttm, Ser., = C. chilense, Baill. 

 Bahia Blanca, by watercourses (No. Ill, G. C). Distinguished 

 from C. arvense, L., mainly by the foliaceous bracts, with the 

 edges not scarious. 



HYPEBICINE.3B. 



Hypebicum connatum, Lam. Sierra de la Ventana, and 

 North Patagonia (No. 71, G. C.). 



Zygophylleje. 

 Larbea nitida, Cav. Valley of the Limay and elsewhere in 

 North Patagonia (No. 87, G. C). 



Gebaniacej:. 

 Gebanium patagonicw, MooTe. fh Common about Bahia 

 Blanca (No. 48, G. C). The local Spanish name for this, as well 

 as the next very different plant, is Alfilerillo. To judge from a 

 specimen in Kew Herbarium, G. intermedium, Bert., is not distinct 

 from this. 



