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OP ARTS AND SCIENCES. 73 



POLYGALA ACANTHOCLADA. Fruticulosa, bipeclalis, ramosissima, 

 subciuereo-pubescens, spiuis gracilibus armata ; foliis lineari-spathulatis 

 rigidulis (lin. 3-4 longis) ; floribus subaxillaribus sparsis albidis liii. 

 2 longis pedicello basi bibracteato parum brevioribus ; alls obovatis 

 sepalis casteris duplo majoi-ibus corollam adtequautibus ; carina bre- 

 viter cymbiformi nuda dorso umbonata. — Sides of bkiff'8, on the San 

 Juan River, in the south-eastern border of Utah, T. S. Brandegee, 

 in Hayden's Exploration. Resembles P. suhspinosa of Watson, but 

 woody ; the flowers scattered, pale, and less than half the size ; the 

 free portion of the corolla of five short and obtuse lobes nearly equal 

 in length and little longer than the united portion, emarginate ; the keel 

 not much larger, a conical boss on the upper part of the back ; no 

 crest. Spines of the branchlets often compound. No fruit seen. 



Glossopetalon Nevadense. Cinereo-puberulum ; foliis ovalibus 

 e basi squamaceu dilatata mauifeste stipulifera ; floribus tetrameris. — 

 Northern part of Washoe County, Nevada, J. G. Lemmon and E. L. 

 Case. All interesting addition to an anomalous genus, upon the 

 affinity of which more light may now be thrown. I had noticed the 

 likeness of the fruit and seed to that of the Staphyleaceous genus 

 ^uscaphis,' and I can now bring to view other points, which alto- 

 gether must exclude it from Celastracece, and in my opinion refer it to 

 the Sapindacece, suborder Staphyleinece,^ notwithstanding the alternate 

 entire leaves. Mr. Wright's original specimens of G. spinescens show 

 no clear trace of stipules ; but in fresh ones from Parry's Southern 

 Utah collection (No. 27), they are evident on vigorous shoots, in the 

 form of a setaceous-subulate cusp on each side and near the apex of the 

 deltoid squamaceous base of the leaf. As in analogous cases, they are 

 wanting to the fascicled leaves. As in the original specimens of G. 

 spinescens, so in these, altiiough seeds seem to be full-grown and well- 

 formed, I find not a single developed embryo. If this should prove 

 to be straiglit and the albumen wanting, I should refer the genus to 

 Hosacece near to Purshia ; but I expect it will turn out otherwise. 



Petalostejion tenuifolius. Multicaulis e radice perenni, pubes- 

 cens, nunc glabratus ; foliis 3-5-foliolatis ; foliolis mox involutis lili- 

 formi-linearibus petiolo brevioribus parce glandulosis ; spicis longius 

 peduiiculatis ex ovata demum cylindricis densifloris ; bracteis ovatis 

 caudato-aristatis cum calyce sericeo-villosis eglandulosis ; corolla roseo- 



* " Staphi/lece " Benth. & Hook, is only the plural of Staphylea, and Slaphyleece 

 is overchaiged with vowels. 



