228 PROCEEDINGS OF THE AlilERICAN ACADEMY 



tomentosis ; pedunculis folio longioribus 2-3-floris ; floribus perlicella- 

 tis ; sepalis acutis vel parum acuminatis, 3 exterioribus ovatis, iuterio- 

 ribus subovatis teiiuioribus dimidio minoribus ; corolla ut videtur alba, 

 limbo pollicern lato. — S. Arizona, in the Santa Catalina Mountains, 

 Pringle, May, 1881. 



EvoLVULUS L^TUS. E. Arizonico affinis, scd pilis longis patenti- 

 bus villosus atque indumento sericeo undiqne argentato-sericeus, mul- 

 ticaulis e basi pereuni suffrutescente ; caulibus erectis foliosis ; foliis 

 lanceolatis sessilibus (majoribus ultra-senaipollicaribus, sumniis lin. 

 2-3 longis) ; pedunculis 1-3-floris folia pi. m. superautibns ; corolla 

 caerulea semipollicem diametro. — Mesas and foot-hills of the Santa 

 Rita Mountains, S. Arizona, Pringle. 



Breweria minima. Pusilla, e radice annua diffusa, pubescens ; 

 foliis lanceolatis basi attenuatis, imis spathulatis ; pedunculis unifloris 

 folio brevioribus versus apicem bibracteatis : flore lin. 2-3 longo ; 

 corolla violaceo e calyce parum exserta, lobis subovatis ; stylo bipar- 

 tite. — Northern part of Lower California, April, 1882, 3Iarcns Jones, 

 Parry, Pringle. This has the aspect of an Evolvulus and of the Sfy- 

 lisma section of Breweria.^ 



Pentstemon Parisiiii. p. spectahili et P. Clevelandi affinis, 

 pariter glaberrimus, glaucescens ; caule 2-3-pedali ; foliis integerrimis 

 vel tenuissime denticulatis, caulinis pra?sertim superioribus oblongo- seu 

 ovato-lanceolatis e basi subcordata semiamplexicauli baud connatis ; 

 panicula ampla eflfusa, pedicellis gracilibus ; corolla (pollicari) angusto- 

 infundibuliformi roseo-rubra mox violascente, limbo parvo suba;quali, 

 lobis lin. 2 longis ; filamento sterili glaberrimo. — S. E. California, in 



* It may here be noted that an inspection of the originals in the Sherardian 

 herbarium enables me to eliminate two false species of Convolvidacece introduced 

 by Pursh, which have given trouble, viz. : — 



Convolvulus Sherardi, Pursh, Fl. ii. 730. This is founded on a poor fruiting 

 specimen of Convolvulus micranihus, R. & S., which was collected in the West 

 Indies, not in " Carolina." 



Cahjstegia paradoxa, Pursh, 1. c. 729. The specimens belong to Convolviihs 

 hirsutus, Bieb. (C. sagittatus, Sibthorp), and were doubtless collected by Sibthorp 

 in Greece. There are two tickets with the specimen : one with tlie phrase 

 " Convolvulus hirsutus anguloso folio, fl. albo ; " the other, which is there 

 through some misplacement, is the one which Pursh has copied, and which led 

 him wrongly to conclude that tlie plant came from Virginia. 



Cali/sicgia Catesbeiana, Pursh, 1. c, is founded on a specimen from Catcsbj' in 

 the same cover as the above (no. 343) ; I had already rightly referred it to 

 the Convolvulus scpium, var. repens, but it is one of the forms which may almost 

 as well he referred to C. spithamcEus. 



