7' 



C. SKOTTSBERG 



Rea Bert, ex Dene pro parte. Dendroseris subgen. Rca (Bert.) Skottsb. 3.201. 



Capitula i — 1.5 cm lata, flosculis lacteis. Receptaculum nudum. Achaenia 

 obovoidea-oblageniformia, dimorpha, a dorso vel a latere compressa, valde nervoso- 

 co.stata, pappo achaenio breviore, caduco. Arbusculae usque arbores trunco ra- 

 moso solido, foliis rosulatis simplicibus tenuiter membranaceis. Typus: R. mi- 

 crantha Dene. — Text figs, e — h. 



139. Rea neriifolia Dene. Dendroseris neriifolia Hook, et Arn. Skottsb. 

 3.206. 



140. Rea micrantha Bert., Dene. Dendroseris niicrantha Hook, et Arn. 



Skottsb. 3.206. 



141. Rea pruinata (Johow) n. comb. Deyidroseris pnmiata Skottsb. 3.207, 

 5.170, 8.363. 



Add Masatierra : Pto Ingles, b.-fl. 25—26/12 1927, LOOSER nos. 488! 489! 

 south side of Portezuelo de Villagra, 300 m, BoCK no. 65! 



Hesperoseris nov. gen. Dendroseris, Johow; D. subgen. Rea sect. 

 ScJiizoglossuni Skottsb. 3.201. 



Capitula parva anguste cylindracea receptaculo nudo flosculis lacteis. Achae- 

 nia (matura baud visa) illis generis Reae similia, pappo achaenio multum longi- 

 ore, ut videtur longius persistente, setis numerosissimis. Ligulae usque basin 

 5-divisae. Arbor trunco ramoso solido, foliis simplicibus papyraceis. Typus: H. 

 gigantea (Johow) Skottsb. — Text figs, i — 1. 



The allotment of 8 important characters between the four dendroseroid gen- 

 era is shown in Table V. 



Table V. 



Explanation. 

 Stent: S solid, s hollow; B branching, b simple. Leaves: L simple, 1 pinnate. Receptacle: 

 R fibrillose, r naked. Corolla: C orange, c white. Ligide: T entire, t deeply 5-split. Ac/ierje: 

 A winged, a unwinged. Pappus: P as long as or longer, p much shorter than the achene. 



The statistics given in 3. 211 have undergone a slight change. The num- 

 ber of genera is ?>'j, of which 16 or 18.4% are endemic, the number of species 

 146, loi or 70 % being endemic. The percentage of species found in both is- 

 lands is only 18.6. 



II. Introduced species. 

 I. Paspaliim distichum L. Skottsb. 3.214. — The identity ol P. fer}iande- 

 zianum Steud. with P. distichum was stated by R. AcEVEDO DE VargaS. 



