

BRIEFER ARTICLES 



SOME NEW WASHINGTON PLANTS 



and 



elementary 



Sim 



adequate study of them has as yet not been made. Unfortunately many of 

 the better systematists are in the habit of throwing all these interesting forms 

 together, and of omitting their descriptive study/' A small collection of 

 Oenotherae recently determined at the Gray Herbarium for W. N. Suks- 

 DORF well exemplified the justice of this criticism , for although it lacked 

 one of the two species of Onagra attributed to Washington in Piper^s 

 recent jQora, it contained no less than three undoubtedly distinct species 

 of this subgenus; one a very large-flowered plant of obvious relationship to 

 Oenothera Hookeri T. & G., the second probably referable to O- strigosa 

 (Rydb.) Mack. & Bush, the third a new species. 



V Oenothera (Oxagra) cheradophila Bartlett, sp. nov. — Herba erecta 



)lex vel in parte inferiore ramosa- Caulis vinaceo-purpureus 

 deorsum albo-pilosus sursum subappresse strigosus. Folia caulina pallido- 

 viridia lanceolata utrinque albo-strigosa; inferiora usque ad 3^"^ lata 16^^ 

 longa, apice acuta, basi in petiolum alatimi brevem decurrentia, leviter 

 remoteque denticulata, denticuHs apice albis induratis; superiora parviora 

 integerrima sessilia apice basique acuta. Bracteae foliis supremis similes 

 sed eis par\dores, maximae a capsulis maturis plerumque superatae infra 

 mediam 6^^ latae 2.5 ^^ longae. Hypanthium 2.5^^ longiim inferne ca. 

 ^mm crassum superne aliquanto crassius, extus patenter albo-pilosum. 

 Calycis segmenta pallido-viridia densius subappresse albo-strigosa deltoidea 

 11-13^^ longa ad basin 4^^ lata, apicibus liberis, calyce nondum expanso, 

 vix i"^"^ longis acutiusculis, Petala flava saepe rosaceo-tincta 8"^"^ longa 

 infra apicem 7.5"^"^ lata basi cuneata apice altiuscule retusa. Stamina 

 corollam paulo superanta, filamentis planis ca. 6,5^"^ longis sursum grada- 

 tim angustatis, antheris ca. 6.3"^"^ longis brevissime infra mediam affixis. 

 Styli pars hypanthio exserta 2.5^"^ longa. Stigma 4-partitum viride, ramis 

 subteretibus carnosis ascendentibus 4™"^ longis plerumque apices filamen- 

 torum vix attingentibus, raro paululo longioribus sed nunquam apices 

 antherarum superantibus. Capsula matura prope basin 5-6^^ crassa 

 3^^^ longa subquadrangula pallido- vel subolivaceo-viridis appresse albo- 

 strigosa, ad apicem versus gradatim angustata et in rostrum 3^^ longum 

 desinens; rostri segmenta, capsula dehisceta, recte divergentia. Semina 

 brunneola prismatica 1.5-2^^ longa. 



• Botanical Gazette, vol. 44] [302 





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