﻿of the Southeastern United States 471 



olate, acute or acuminate, sharply serrate, closely sessile and partly 

 clasping : panicles rather loosely flowered : calices sparingly gland- 

 lar-pilose, segments about I cm. long, with a narrowly lanceolate 

 base and narrowly linear tip : corolla purple, about 2.5 cm. long ; 

 tube abruptly dilated about the middle ; segments ovate or broadly 

 oblong-ovate, those of the upper lip much smaller than those of the 

 lower : sterile filaments sparingly bearded above the middle : cap- 

 sules ovoid, 5-6 mm. high. 



On bluffs, Tennessee and Louisiana. Spring. 



In a former number of this journal* I published a note on the 

 occurrence of Pentstemon Smallii at Nashville, Tennessee. A fur- 

 ther study of the section of Pentstemon to which the species in 

 question belongs convinces me that the Nashville plants are specifi- 

 cally distinct from any described form. The elongated calyx-seg- 

 ments are diagnostic. An old specimen with mature fruit but no 

 flowers preserved in the herbarium of Columbia University seems 

 to belong in Pentstemon ealycosns. Its label bears this record, 

 " Fertile soils, Louisiana, Hale; April/' 



- Pentstemon Helleri. 



Perennial, mostly puberulent, or glabrate, below the inflor- 

 escence, thence minutely glandular-pubescent. Stems erect or as- 

 cending, 3-6 dm. tall, simple up to the inflorescence : leaves 

 opposite, glabrous or nearly so, lustrous ; blades various, those of 

 the basal and lower stem leaves oblong-spatulate or nearly linear, 

 6-10 cm. long, acute, narrowed into winged petioles, blades of 

 upper leaves oblong to broadly ovate, acute, sessile ; all undulats 

 or slightly toothed : calices densely glandular-pubescent ; sege 

 ments ovate to elliptic-ovate, 8-10 mm. long, acutish : corollas 

 white or rose, sometimes tinged with blue, minutely glandular- 

 pubescent, 3-3.5 cm. long, rather gradually enlarged, upper lip 

 with shallowly notched lobes, lower lip with truncate or retuse 

 lobes : capsules conic-ovoid, at least 1 cm. long, not reticulated, 

 much surpassing the calyx. 



On prairies, Kerrville, Texas. Spring. 



Mr. Heller informs me that he very reluctantly associated the 

 name Pentstemon Cobaca with his number 16 10 in his distribution 

 °f " Plants of Southern Texas." These specimens form the type of 

 a species perfectly distinct from Pentstemon Cobaea. Plants belong- 

 ing here may be found under the name Pentstemon Cobaea in van- 



* Bull. IY>rr. Hot. Club, 21 : 504. 1894 



