RvDBEKci : Studies on tiik R()ck\ Mountain Floka 684 



6. Abronia salsa sp. nov. 



AOroiiin frn^nrfi.s )ri. Wats. King's Rep. 5: 2S4. 1871. Not 

 Nutt. 



Perennial : stem ascending, 3-4 dm. high, densely viscid-pubes- 

 cent especially above, stout : leaves very thick, puberulent ; petioles 

 2-3 cm. long ; blades oval or elliptic, obtuse, or the lowest rounded 

 oval, 3-5 cm. long, 1-3 cm. wide : peduncles 5-7 cm. long, den.sely 

 viscid-pubescent ; bracts rounded obovate, about i 5 mm. long and 

 often as broad, pubescent : flowers many, about 2 cm. long with a 

 limb about 4 mm. wide : fruit about i cm. long, similar to tho.se of 

 . i. lanccolata and - /. fallax but the wings are rather thicker. 



The sheets in the National Herbarium bear the following label- 

 ing by Dr. Heimerl : ''Abronia fragrans Nutt. {ad fori nam ellip- 

 ticam (Nelson) accidcns .') ; " but neither A. sa/sa nor A. cUiptica 

 A. Nelson have the fruit of A. fragrans, and therefore can not be 

 regarded as forms of that species, A. salsa differs from A. clliptica 

 in the stouter viscid-pubescent stem, the larger bracts and flowers. 

 It grows in sandy saline soil at an altitude of 1000- 1300 m. 



Utah: Salt Lake City, 1869, 5. Watson, p6j (type in herb. 

 Columbia University) ; same locality, Capt. Slansdnrj, and 1871, 

 Harden; Silver Reef, 1894, J/. E. Jones ; Grand Junction, 1900, 

 .S". G. Stokes. 



7. Abronia fallax Heimerl sp. nov. 



Perennial ; stem erect, almost shrubb}' below, branched, straw- 

 color or white, viscid-pubescent above : leaves thick, puberulent, 

 erect ; petioles 1-2 cm. long ; blades of the lower oval, of the 

 upper long-lanceolate, 2-5 cm. long, 1-1.5 cm. wide, obtuse or 

 the upper acute : peduncles 1-2 cm. long, densely viscid-pubes- 

 cent ; bracts 5-6, oval, about 1.5 cm. long, 6-7 mm. wide: 

 flowers many, about 15 mm. long : fruit with the wings about 6 

 mm. wide and 8 mm. long, cuneate-obpyramidal. 



The type in the U. S. Nat. herbarium bears the following re- 

 marks from the hand of Dr. Heimerl : " Abronia fallax ni. — / Hy- 

 brid a ex A. fragrans et A. tnrbinata. — Ab A. fragrans ant hoe ar- 

 pinis alls apice transverse dilatatis, ab A. turb. bract eis capitulonmi 

 niagnis, scariosis divcrsa^ * To me it seems that the plant has 

 little to do with A. fragrans and is less related to . /. tnrbinata 



* In a letter lately received from Dr. Heimerl, he has authorized me to use his 

 name and lujtes. 



