184 TRANSACTIONS OF THE [mAY 5, 



the lower scabrous with minute pubescence on the strongly retic- 

 ulated venation ; stipules persistent, more than 1 cm. long, atten- 

 uate, acuminate ; bracts similar but fugacious ; panicle a foot or 

 more long, few-flowered, flowers 8 mm. long, their pedicles elon- 

 gating in fruit to 3 cm. and very slender ; calyx 2 mm. long, its 

 lobes acutish ; joints of the pod rhombic, minutely canescent, 

 slightly raised in the calyx, resembling those of D. canescens, 

 to which species the plant appears to be most nearly related. 

 The only pod on the specimen examined consists of but three 

 joints. 



8op1iora affinis, Torr. & Gray. 



Hoffmanseggia stricta, Benth. 



Parkinsonia aculeata, L. 



Cassia Rmmeriana, Scheele. 



Cercis occidentalis, Torr. Possibly the C. reniformis, En- 

 gelm., wnich Dr. Watson reduces to a variety. 



Prosopis juliflora, DC. 



Mimosa Linclheimeri, Gray. 



Mimosa fragrans, Gray. 



Acacia Wrightii, Benth. 



Acacia Greggii, Gray. 



Lythrum alatum, Pursh. 



Gaura coccinea, Nutt. 



(Enothera speciosa, Nutt. 



Cucurhita fmtidissima, Kunth. 



Houstonia angiisti folia, Michx. 



Melampodium cinereum, DC. 



Berlandiera lyrata, Benth. 



Zinnia pumila, Gray. 



Leimcliys columnaris (Pursh.), Torr. & Gray,var. pulcherrima 

 (DC), Torr. & Gray. 



Zecttnenia hisjjida (H. B. K.), Gray. 



Veriesina encelioides (Cav.), Gray. 



Thelysperma longipes, Gray. 



Hymenopappii^s jlavescens, Gray. 



HeUnium tennifoUum, Nutt. 



Helenium elegans, DC. ? 



Centaur ea Americana, Nutt. 



Perezia nana, Gray. 



Lygodesmia aphylla (Nutt.), DC. 



Pyrrliopappus Garolinianus (Walt.), DC. 



Lobelia Cliffortiana, L., var. hrachypoda, Gray. 



Rhododendron Jiudiflorum (L.), Torr. 



Philibertia undula'ta (Torr.), Gray. 



Asclepiodora decumhens (Nutt.), Gray. 



Asclepias verticillata, L., var. subvert icillata, Gray. 



