Plant a Lindheimeriance. 211 



Houston. April. A span to a foot high, with conspicuous 

 bright yellow petals. 



2. R. trachyspermus (Engel. MSS.) : caule ramoso gla- 

 bro ; foliis petiolatis, inferioribus plerumque orbiculato-ovatis 

 obtusis subintegris, superioribus lanceolatis lineari-lanceola- 

 tisve denticulatis, basi petiolorum membranaceo-dilatata brac- 

 teisque subciliatis ; sepalis 3-4 ovatis reflexis petala 3-5 

 minima lineari-spathulata superantibus ; staminibus 5-10 ; 

 carpellis compressis obtusis undique tuberculosis in capitulum 

 oblongum seu cylindricum congestis. — Margin of ponds near 

 Houston, &c. April, May. 



3. R. TRACHYSPERMUS, /3 ANGUSTIFOLIUS (Engel. MSS.) '. 



foliis omnibus lanceolatis lineari-lanceolatisve ; — and y ? (an 

 spec. ?) Lindheimeri (Engel. MSS.) : foliis inferioribus 

 ovatis ; sepalis 3-5 ovatis obtusis patentibus petala 3 lineari- 

 spathulata oequantibus ; carpellis compressis obtusiusculis tu- 

 berculosis in capitulum globosum congestis. — Near Houston, 

 &c. but not growing together with No. 2. 



4. Clematis cylindrica, Sims. A narrow-leaved variety ; 

 the herbaceous stem beginning to flower in April, when only 

 a foot or so in height. Houston. 



5. C. reticulata, Walt. Houston. June. 



6. Anemone Caroliniana, Walt. Prairies, Houston. Feb- 

 ruary, March. 



7. Cocculus Carolinus, EtC. Houston. June. 



8. Streptanthus hyacinthoides, Hook. Bot. Mag. t. 

 3516. West of the Brazos. July. 



9. Cristatilla erosa, Nutt.; Torr. fy Gr. Fl. I. p. 123. 

 Sandy prairies on the Brazos. August. 



10. Cleomella Mexicana, DC. High prairies west of 

 the Houston. April, August. 



11. POLYGALA LEPTOCAULIS, Toi'T. fy Gr. Fl. I. p. 130. 



West of the Brazos. August. — More or less branched. 

 Capsules ovate, with glands along the dissepiment on the face 

 of the valves. 



12. P. incarnata, Linn. Houston. April. 



