﻿144 Rydberg: Notes on Rosaceae 



and shorter, and less strongly directed forward. To this species 



DuRANGO: San Ramon, 1906, Palmer 78. 



Jalisco: mountains near Talpa, March 7, 1897, £. W. Nelson 

 40ig; between Dolores and Santa Gertrudis, August 7, 1897, Rose 

 2039. 



Ruhus sapidus Schlecht. A duplicate of the type of this 

 species is in the Torrey herbarium. Typical specimens have been 

 collected near the type station (Jalapa), Pringle 8071. These 

 were wrongly determined as R. huministratus Steud., which species 

 belongs to another group of the genus. Dr. Focke has included 

 R. sapidus in the Suherecti, in which section he also included our 

 Arguti. R. sapidus has subcoriaceous leaves, as most Mexican 

 species have, and is not an erect plant. 



Ruhus Tuerckheimii Rydb. This is evidently also related to 

 R. sapidus, but differs from all the species of this group in the small 

 petals. It is perhaps most closely related to R. amplior, but 

 differs in the finer and more regular toothing of the leaflets, the 

 more numerous flowers and the small petals. Known only from 

 the type. 



Ruhus alnifolius Rydb. was referred to the Sapidi, but 

 is not closely related to any of the species of the group. It is 

 characterized by the racemose inflorescence and the coriaceous 

 leaflets, obtuse or rounded at both ends. It is only known from 

 the type collection. 



DURI 



Ruhus durus Sauvalle. This is characterized by its narrow 

 inflorescence, coriaceous, shining leaflets, which are mucronate- 

 serrulate and glabrous on both sides or nearly so beneath. Focke 

 describes a variety Grisebachii with the leaves ferrugineous-villous 

 beneath. This is unknown to me. I have seen but the following 

 specimen of the species: 



Cuba: Wright 2410. 



Ruhus flortdentus Focke. This differs from the preceding in 

 the open corymbiform inflorescence and glabrous drupelets, and 

 larger petals. To it belongs: 



Porto Rico: Ad juntas, 1885, Sintenis 4100. 



Ruhus Eggersii (Focke) Rydb. R. florulentus Eggersii Focke. 



