50 



Petalostemon emarginatum T. & G. Fl. N. A. I : 311 (1838). 



Found first in dry soil near the Arroyo at Corpus Christi, altitude 40 

 feet, and a few days later, growing in sand along the beach, almost at 

 the water's edge. Much branched from the slender tap-root, which is 

 apparently annual. Branches decumbent for a short distance, then 

 ascending, giving a cup-shaped outline to the lower part of the plant. 



May 31 (1799) \ tv P e locality, "Texas." 

 Kuhnistera multiflora (Nutt.) A. A. Heller, Mem. Torr. Club, 5 : 



197 (1894). 



' Petalostemon multiflorus Nutt. Journ. Phila. Acad. 7 : 92 (1834). 



Along the beach of Corpus Christi Bay, on a grassy bank, growing in 

 dense clumps. The root of this species is often very large and thick, 

 sending out horizontal branches i to 2 feet long. 



June 2 (1814) ; type locality, " in the plains of the Red river." 



Kuhnistera pulcherrima n. n. 



(PLATE 2.) 



Petalostemon virgatum Scheele, Linnaea, 21 : 401 (1848), not Nees 



(1839). 



Perennial, root stout in mature specimens, divergently branched, reddish 

 brown; stems simple, erect, reddish, especially below, smooth, or 

 sparingly pubescent ; stipules filiform, subulate ; leaves verticillas- 

 trate, smooth, the petioles about the length of the leaflets ; petiolules 

 very short; leaflets one to three pairs, usually a half inch in length, 

 narrowly linear, slightly narrowed at each end, margins revolute in 

 dried specimens, upper side dull green, glandular, especially along 

 the margin ; under side yellowish-green ; peduncles rather short, 

 two to four inches long ; heads short-cylindrical, an inch or slightly 

 more in length, as broad as long when in flower ; bracts broadly 

 ovate, shorter than the calyx, with brown, acuminate tips; calyx 

 salmon or pinkish, with pubescent lines on each side, the lanceolate, 

 or triangular-lanceolate, acute green lobes shorter than the tube, 

 densely canescent ; petals deep rose-purple ; ovary slightly pubes- 

 cent at base. 



This plant has quite an interesting history. It is very plentiful about 

 Kerrville, ranging from the banks of the Guadalupe to almost to the 

 summits of the hills. I at once recognized it as something strange, and 

 concluded that it was either new or K. decumbens, and as it did not 

 prove to be that species, named it K. pulcherrima n. sp., and as such 

 distributed it. The cause of this error is that Dr. Gray very much 

 underrated the excellent work of Scheele, refusing, at least for a time, to 



