COMPOSITAE NEW AND TRANSFEKRED. 523 



(type coll.: British Museum). — Most nearly related among de- 

 scribed species to P. verhesinoides DC, but distinct in its longer 

 looser phyllaries, fewer longer-peduncled heads, and in its distinctly 

 paler leaves, which are much less reticulate beneath. 



Perymenium hypoleucum Blake, n. sp. Frutex ramosus. Cau- 

 lis strigillosus cortice griseo-brunneo tectus aetate subglabratus ; rami 

 sub-6-angulares subdense strigillosi purpureo-brunnei. Folia oppo- 

 sita (paucis superioribus interdum alternis exceptis) ovata vel elliptico- 

 ovata obtusa vel acuta basi cuneato-rotundata serrata (dentibus 

 5-7-jugis late triangularibus subpatentibus vel appressis) pinnati- 

 nervia (venis supra impressis subtus reticulatis majoribus 3-4-jugis 

 imis validioribus) supra viridia dense strigosa pilis basi tuberculatis 

 subtus cum pilis densissimis appressis brevibus canescentia et sub- 

 aspera 2-3 cm. longa 1.1-1.9 cm. lata. Petioli strigosi immarginati 

 1.5-2 mm. longi. Capitula 1 cm. lata ad apices ramorum 4-10 dense 

 cymoso-paniculata in pedunculis dense strigosis 3-8 mm. longis 

 disposita. Discus 6-8 mm. altus 5-7 mm. crassus. Involucri 4- 

 seriati gradati 4 mm. alti squamae solummodo apice herbaceae infra 

 induratae pallidae dense strigillosae obtusae vel rotundatae extimae 

 elliptico-ovatae interiores deltoideo-ovatae vel late ovales intimae 

 3-nerviae. Radii fertiles ad 7 ovales aurei 2-3-denticulati in venis 

 dorso hirtelli 3.5 mm. longi 2 mm. lati. Corollae disci flavae in 

 dentibus et interdum tubo hirtellae 3.5 mm. longae (tubo 1 mm.). 

 Faleae in carina infra glandulosae supra subspinulosae in margine 

 denticulato-spinulosae apice abrupte acutae 3.7 mm. longae. Achaenia 

 (immaturissima) in angulis hispidula. Pappi aristae ca. 8 caducae 

 spinulosae subaequales (una duabusve duplo longioribus exceptis). — 

 Puebla: vicinity of San Luis Tultitlanapa, near Oaxaca, 9 July 1908, 

 Pur pus 3087 (type coll.: British Museum). — Distributed as P. rude 

 Rob. & Greenm., from which it is very distinct. More closely related 

 to P. croceum Rob. & Greenm. and P. angustifolium Brandegee, but 

 quite distinct from both. 



Perymenium leptopodum Blake, n. sp. Frutex ramosus. Caulis 

 tenuis quadrangularis minute strigillosus cortice brunneo vel pur- 

 pureo-brunneo tectus. Folia opposita ovato-lanceolata acuminata 

 basi cuneata trinervia appresse serrata (dentibus 8-10-jugis) supra 

 obscure viridia minute strigilloso-scabra subtus non pallidiora glandu- 

 loso-adspersa venas et venulas secundum strigillosa 4.6-6.3 cm. 

 longa 1.5-2.3 cm. lata. Petioli vix marginati tenues 9-16 mm. longi. 

 Capitula 1.6 cm. lata in apicibus ramorum et ramulorum ternatim vel 

 quinatim cymoso-paniculata. Pedicelli 5-19 mm. longi strigillosi. 



