257 



Certain orchids have been cited as indices of the xerophytic 

 nature of bog habitats. Calopogon is a typical bog orchid. 

 That it is able to persist in this undoubtedly xerophytic black 

 oak association might appear to some to be a good proof of the 

 xerophytic character of this species. I cannot believe, however, 

 that this is the case. That it is able to persist at all is no doubt 

 due to the greater accumulation of moisture at the base of the 

 oak, with the possible further advantage of a certain degree of 

 shade, although this species typically occurs in the open. If the 

 plant is xerophytic it should be able to persist in the open dried-up 

 swamp, where it does not. In nearly all the plants observed 

 here the leaf was dead and shriveled for about an inch from the 

 apex. A greater degree of shading will, however, certainly 

 eliminate this species, and it is evident that it must eventually 

 disappear as the surrounding vegetation becomes more dense. 

 Chicago, III. 



SHORTER NOTES 



A New Senecio from Cuba. — In the writer's recent paper on 

 " New Species of Cuban Senecioneae " Senecio pachylepis was con- 

 trasted with S. eriocarphus. Both species were characterized 

 from specimens secured by Mr. J. A. Shafer during his botanical 

 explorations in eastern Cuba but the description of the latter 

 species was unfortunately omitted. It may be recorded as 

 follows : 

 ^ Senecio eriocarphus Greenman, n. sp. Caulis lignescens 1.5- 

 2.5 dm. altus; ramulis ultimis juventate teretibus dense hirsuto- 

 tomentosis; foliis alternis petiolatis coriaceis oblongo-obovatis vel 

 oblanceolatis 2.5-8 cm. longis .5-3 cm. latis supra glabris subtus 

 primum tomentulosis mox glabratis vel in nerviis plus minusve 

 persistenter pubescentibus ad apicem acutis vel obtusis integris 

 remote sinuato-dentatis, marginibus plerumque revolutis; petiolis 

 usque ad 1.5 cm. longis plus minusve hirsuto-tomentosis; in- 

 florescentiis terminalibus dense cymosis sessilibus fulvo-tomen- 

 tosis; capitulis calyculatis discoideis; squamellis calyculatis lin- 

 earis vel subspathulatis 3-5 mm. longis; involucri squamis 8 



