Floristik, Geographie, Systematik etc. 461 



Leveille, Mgr. H., Epüobium Arechavaletae Levl. nov. sp. (Bull. 

 Geogr. bot. XXI. p. 149. 1911.) 

 La seule espece du genre Epüobium indiquöe jusqu'ici dans 

 l'Uruguay et prise par Arechavaleta pour VE. tetragonum L. 



J. Offner. 



Mc Dermott, L. F., An illustrated Key to the North Ame- 

 rican species of Trifolium. (San Francisco. Cunningham, Cur- 

 tiss & Welch. 12°. 325 pp. 136 pl. Apr. 25, 1910.) 



Keys are given to the ten sections into which the genus is 

 divided, and, under these, to their species. The plates are from 

 original dravvings executed with some skill, and the authors de- 

 scriptions of species are accompanied by transcripts of the original 

 descriptions, including those of synonyms. The following new 

 naraes occur: Trifolium tridentatum trimorphum (T. trimorphum 

 Greene), T. tridentatum segetum (T. segetum Greene), T. tridentatum 

 aciculare (T aciculare Nutt.), T. tridentatum aciculare Watsonii (T 

 Watsonii Loja), T. involucratum Fendlerii (T. Fendlerii Greene), T. 

 involucratum arisonicum (T. arisonicum Greene), T. involucratum 

 fimbriatum (T. fimbriatum Lindl.), T involucratum Kennedianum, 

 T. triaristatum pinetorum (T. pinetorum Greene), T. variegatum pau- 

 ciflorum (T. paucißorum Nutt.), T. variegatum trilobaium Jepson (T. 

 trilobatum Jeps.), T. variegatum melananthum Morleyanum (T. Mor- 

 leyanum Greene), T. variegatum melananthum major (T. variegatum 

 major Loja), T. variegatum pauciflorum phaeocephalum (T. phaeoce- 

 phalum Greene), T. oliganthum trichocalyx (T. trichocalyx Heller), 

 T. appeudiculatum rostratum (T. rostratum Greene), T. monanthum 

 tenerum Grantianum (T. Grantianum Heller), T. monanthum parvum 

 (T. paucißorum parvum Kell.), T. monanthum parvum glabrifolium, 

 T. microcephalum velutinum, T. depauperatum laciniatum (T. laci- 

 niatum Greene), T. depauperatum diversifolium (T. diver sifolium 

 Nutt ), T. depauperatum stenophyllum (T. stenophyllum Nutt.), T. 

 depauperatum stenophyllum franciscanum [T franciscanum Greene), 

 T. depauperatum stenophyllum lacinifolium, T. depauperatum am- 

 plectens (T. amplectens T. & G.), T. depauperatum amplectens trun- 

 catum (T. truncatum Greene), T. fucatum virescens (T. virescens 

 Greene), T. fucatum Gambellii Jepson, (T. Gambellii Nu«.), T. fuca- 

 tum Gambellii flavulum (T. ßavulum Greene), T. dasyphyllum uin- 

 tense (T. uintense Rydb.), T. dasyphyllum attenuatum (7 '. attenuatum 

 Greene), T. dasyphyllum stenoiobum {T. stenolobum Rydb.), T. An- 

 dersonii monoense {f. monoense Greene), T. gymnocarpon Plumerae 

 (T. Plumerae Wats.), T. gymnocarpon Lemmoni (T. LemmoniVJ ats.), 

 T. Macraei Catalinae (T. Catalinae Wats.), T. albopurpureum neolo- 

 gopus (T. neologopus Loja), T. albopurpureum neologopus argillorum 

 Jepson (T. columbinum argillorum Jeps.), T. olivaceum columbinum 

 (T. columbinum Greene), T californicum Jepson (7. dichotomum 

 Jeps.), T. californicum turbinatum Jepson (T. dichotomum turbinatum 

 Jeps.), T. dichotomum petrophilum (T. petrophilum Heller), T. erioce- 

 phalum arcuatum {T. arcuatum Piper), T. eriocephalum villiferum 

 (T. villiferum House), T. eriocephalum Harneyense (T. Harneyense 

 Howell), T. longipes Hanseni (T. Hanseni Greene), T. longipes cau- 

 rinum (T. caurinum Piper), T. longipes Elmeri (T. Elmeri Greene), 

 T. longipes Elmeri atrorubens (T. atrorubens House), T. longipes El- 

 meri neurophyllum (T. neurophyllum Greene), T. oreganum Rusbyi 



