1922] 



PAYSON — STUDY OF THELYPODIUM AND ITS IMMEDIATE ALLIES 277 



from the type locality of T. rhomboideum and since that species 

 seems identical with the plant described as T. platypodum, the 

 two are here united under the older name. 



11a. Var. gracilipes (Robinson) Payson, n. comb. 



T. integrifolium Endl. var. ? Brandegee in Hayden, Bull. 

 Geol. & Geog. Survey of the Territories 2 : 233. 1876. 



T. integrifolium var. gracilipes Robinson in Gray, Syn. Fl. N. 

 Am. I 1 : 176. 1895; Nelson in Coulter & Nelson, Manual Cent. 

 Rocky Mountains, 209. 1909. 



Thelypodium gracilipes Rydb. Fl. Colo. 167. 1906. 



Pleurophragma gracilipes Rydb. Bull. Torr. Bot. Club 34: 433. 

 1907; Wooton & Standley, Contr. U. S. Nat. Herb. 19: 268. 1915; 

 Rydb. Fl. Rocky Mountains, 368. 1917. 



Sepals white or nearly so; petals white; nectar glands as in the 

 species: stipe 2-3 mm. long. 



Distribution : southwestern Colorado, northwestern New Mex- 

 ico, and Utah. Type: Brandegee 1233 from southwestern Colo- 

 rado. 



Specimens examined: 



Colorado: Bedrock, Montrose County, Aug. 2, 1912, Walker 869 

 (Rky. Mt. Herb.) ; banks of the San Juan River, Aug., 1875, 

 Brandegee 4278 (Mo. Bot. Gard. Herb.). 



Utah: Armstrong and White Canyons, near the Natural 

 Bridges, Aug. 4-6, 1911, Rydberg & Garrett 9429 (Rky. Mt. 

 Herb.). 



12. T. integrifolium (Nutt.) Endl. Walp. Rep. 1: 172. 1842; 

 Robinson in Gray, Syn. Fl. N. Am. I 1 : 176. 1895; Howell, Fl. 



Northwest Am. 58. 1897; Piper, Contr. U. S. Nat. Herb. 11: 299. 

 1906; Frye & Rigg, Northwest Fl. ISO. 1912. 



Pachypodium integrifolium Nutt. in Torr. <fe Gray, Fl. N. Am. 

 1: 96. 1838; Dietr. Syn. PI. 3: 702. 1843. 



Pleurophragma integrifolium Rydb. Bull. Torr. Bot. Club 34: 

 433. 1907, in part. 



Biennial, glabrous throughout: stems erect, stout, branching, 

 6-15 dm. high: radical leaves oblong-elliptical, 1-3 dm. long 



t>> 



gradually narrowed to a broad petiole ; cauline leaves linear-lan- 

 ceolate, narrowed to a slender base, much reduced upwards and 

 becoming linear in the inflorescence: petals spatulate, about 8 

 mm. long, exceeding the sepals by about one half, bluish or pale 

 rose color; anthers about 2 mm. long, not apiculate; nectar glands 



