226 Engelmann and Gray, 



128. Ipojoea sagittata, Desf. ; Clioisy. June — Sept. 



129. Convolvulus aquaticus, Walt. Wet prairies west 

 of the Brazos. Often 10 feet long. July. 



130. Nama Jamaicensis, Linn. ? Sandy prairies, &c. 

 near the Brazos. June. Annual. 



131. Lithospermum tenellum, Nutt. in Trans. Amer. 

 Phil. Soc. (n. ser.) V. p. 88. On the Brazos, &c. April — 

 August. 



132. Heliotropium curassavicum, Linn. Galveston, &c. 



133. H. inundatum, Swartz ; DC.prodr. 9, p. 539. Banks 

 of the Brazos. June. 



134. Eutoca hirsuta = Phacelia hirsuta, Nutt. in Trans. 

 Amer. Phil. Soc. 1. c. p. 191. Pine woods near Houston. 

 March and April. Corolla with 5 very obscure pairs of 

 squamellae at the base of the tube. Ovary 5-10-ovuled. 

 (Vide No. 279, 280, infra.) Also Texas, Drummond's Coll. 

 3, No. 299. 



interioribus minoribus; tubo cordis cylindrico calycem et laeinias limbi lineari- 

 oblongas obtusas duplo superanle ; staminibus limbo brevioribus ; squamis pinnati- 

 fido-laciniatis ; ovario cum stylopodio stylos subsquante; capsula globosa subacuta 

 corolla marcescente obtecta 1-4-sperma. — North Carolina to Alabama, in the 

 mountains, on shrubs, frequently on evergreens ; on Corylus rostrata, Buncombe 

 Co., N. Carol. ; on the same, and on Andromeda axillaris or spinulosa, on the sides 

 of Negro Mountain, N. Carol., Prof. A. Gray and Air. W. S. Sullivant; in Ala- 

 bama, on Prinos glaber, Dr. Gates, (Herb. Gray.) 



This is clearly the Cuscuta compacta of Choisy's monograph, (and of DC. prodr. 

 excl. syn.) described after specimens collected in Alabama and Georgia ; the notice 

 in Silliman's Journal, Vol. XL1V. p. 195, must therefore be corrected. — It is very 

 near Cuscuta (Lcpidanchc) adpressa, which thus far has only been found on the 

 bottom lands of the Mississippi and Illinois Rivers. This is again a remarkable 

 instance of two nearly allied species, one growing in the mountainous region of the 

 Southern States, the other one in the western lowlands. Analogies offer in Baptisia 

 alba and leucantha, P/iacelia fimbriala and Purshii, and others. The mountain 

 species is distinguished from its western relative by the closer and compacter glome- 

 vules, and much more slender and mostly smaller flowers. The tube of the corolla 

 exceeds the compact scales of the calyx considerably, and is much narrower in pro- 

 portion to its length ; it gives, therefore, to the capsule which it covers, a much 

 more pointed appearance, though the capsule itself is nearly globose. This appear- 

 ance of the vestiges of the corolla on the capsule distinguishes this species from 

 C. adpressa just after flowering. The corolla appears to be more membranaceous 

 than in the western species, and remains whitish when well preserved in the herba- 

 rium ; the other usually turns reddish-brown. 



