178 PATAGONIAN EXPEDITIONS: BOTANY. 



MALESHERBIA HUMILIS D. Don. 



Very branching, villous, depressed. 



Leaves linear, ovate or lanceolate, acute or obtuse, serrate, laciniate or 

 lobulate, occasionally entire. Calyx dilated at the throat, tube narrow. 

 Crown continuous, coarsely toothed ; anthers nearly rotund. 



N. Patagonia, Territory of Neuquen. 



Fam. 73. LOASACE^E. Macl., p. 585. 



LOASA Juss. 

 P. 586 : 



L. ARGENTINA Urb. et Gilg. 



Also in N. Patagonia, Territory of Neuquen, and by Rio Sta. Cruz. 

 Not rare in W. Patagonia, especially near the border of the forest district 

 or, sometimes, in the forest of deciduous beeches. 



The statements, in my earlier papers, of the occurrence of Loasa volu- 

 bilis Juss. in the Baguales district and in the upper valley of Rio Aysen, 

 are based on false determinations and, actually, refer to the present 

 species. D. 



P. 587, add: 



L. ASTERIAS Dus. n. sp. (Plate I). 



Euloasa, perennis, volubilis, ad sectionem Pinnatas pertinens, ovario 

 manifeste supero, ab speciebus omnibus hujus sectionis diversa. Radix 

 fusiformis ; caulis erectus, volubilis vel subvolubilis, fragilis, cortice in 

 parte inferiore saltern laxe accumbente, in parte summa caulis densiuscule 

 aculeata, aculeolis recurvatis, ceterum laevissimus, simplex vel parce 

 ramosus, ramis erectis, apice florigeris ; folia in caule florigero pauca vel 

 fere nulla, valde remota, ovata vel lanceolata, mediocriter petiolata, bipin- 

 nata vel subtripinnata, apicem caulis versus decrescentia, suprema parva, 

 pinnata, omnia (praesertim ad margines) pilis brevibus, basi inflatis 

 remote vestita; flores solitarii vel bini, terminales, prophyllis parvis, 

 linearibus, integris vel subpinnatis, oppositis ; calyx fere planus in latere 

 inferiore, praesertim in parte centrali, ad margines et ad lineam lobulorum 

 medianam, pallidius coloratam spinis basi bullatis dense instructus, in 

 postfloratione subaccrescens, profunde lobulatus, lobis subattenuatis, 

 rotundate obtusus; petala in aestivatione imbricata, sub anthesin hori- 



