S6 



DIDYNAMIA GYMNOSPERMIA 



4. Obovatum. E. 



D. spicis brevibiis; 

 foliis sessilibus, cune- 



ato-obovatis, supenie 



Spikes short; leaves 



sessile, cuneate 



? 



obo 



vate, toothed near the 



f 



dentatis: bracteis mi 



5 



nimis, ovatis, acumi- 



? 



natis. 



E. 



^ 



siunmit: bracteas ve 



7 



ry small^ ovate 



^ 



acu 



mmale. 



Stem about 15 inches high^ square^ glabrous^ pubescent at the summit. 

 Leaves about an inch and a half long^ semiamplexicaule at base^ strou^^ly 

 tooothed towards the summit. Fhwers opposite, not crowded in the 

 spike. Bracteas smaller than in any of the preceding sp'^cies, with tlie 

 calyx pubescent, teeth of the calyx nearly equal. Corolla pubescent. 



If my specimen gives a fair exhibition of this species, it is, when com- 

 pared with the preceding species, a smaller plant, with the corolla less in- 

 flated. Can this have been the original D. denticulatum of Aiton ? Col- 

 lected near St. Mary^s Georgia by Dr. Baldwin. 



-Fiawe r s May — July . 



«% 



-i 



MACBRIDEA. E. 





_ . fc ^ 



Calyx subtiirbina 



Cahjx turbinate, 3- 



large. 



lus, trifidus; laciniis | cleft, with 2 segments 

 duabus majoribus. 

 Corolla biiabiata, la- 

 bio superiore integro, 

 inferiore tripartito. 

 AnthercB bilobae^lobis 



divaricatis, 

 ciliatis. 



spuioso 



Corolla two 

 lipped, the upper en- 

 tire, the lower 3-part 

 ed. 



Anthers 2-lobed 



the lobes divaricate 



? 

 > 



fringed 



spines. 



with 



small 



^ 



I. Pdlchra. Nutt % p. 36. 



Thymbra caroliniana. Walt. p. l62. 



iJoof perennial, creeping. 5^ez» herbaceous, erect, simple, 12 to l8 

 inches high, square, glabrous, a little hairy at the joint'?. I,r>f/.ite.'? oppo- 

 site, lanceolate, acute, serrulate, dotted, ciliate, glabrous underneath, a 

 little hairy on the upper surface, the upper ones sessile, the lower attena- 

 B^ted at base as if on petioles about half an inch long. Flowers verticil 



^ 



mHn. 



^, 



I' 



