500 Rydberg : Studies on the Rocky Mountain Flora 



sent different species from those represented in our herbaria, Prof. 

 Greene's name has to pass into synonymy. 



Trifolium bracteolatum 



Trifoliuni lilacinniu Rydb. Bull. Torr. Club, 28: 37. 1 90 1. 

 Not Greene. 1896. 



Vicia producta sp. nov. 



A very slender, sparingly hairy cespitose perennial. Stems 

 decumbent or ascending. 2—3 dm. long, much branched and leafy, 

 striate and somewhat angled : stipules narrow, semi-hastate, entire, 

 3-5 mm. long; leaflets 3-5 pairs, oblong to linear, 5—15 mm. 

 long, obtuse, mucronate ; tendrils 3-cleft : peduncles 2—4 cm. 

 long, usually 2-flowered, produced beyond the upper flower : calyx- 

 tube about 2 mm. long, strigose, teeth about i mm. long, lance- 

 olate-subulate : corolla about 8 mm. long, yellowish-white, tipped 

 and tinged with purple. 



This species is probably closest related to V. Juiniilis H. B. K., 

 but is characterized by having the peduncle produced beyond the 

 two flowers and by different calyx-lobes. The type was growing 

 among rocks on the south side of a butte, at an altitude of about 

 2400 m. 



Colorado: Butte, 5 miles southwest of La Veta, 1900, Ryd- 

 berg & Vrc eland, 6006. 



Primula Americana sp. nov. 



Primula farinosa K. Gray, Syn. Fl. 2^: 58, in part. 1878. 

 Not L. 1753. 



Perennial with a short rootstock and fleshy-fibrous roots. 

 Basal leaves oblong or oblong-oblanceolate or spatulate, 2-8 cm. 

 long, obtuse, gradually contracted at the base, usually with short 

 winged petioles, sinuate dentate above the middle or subentire, 

 thin, more or less mealy, especially on the lower surface : scape 

 1—2 dm. high, mealy when young: bracts 6-10 mm. long, linear- 

 lanceolate, usually acute : pedicels in flower little if any exceeding 

 the bracts, in fruit sometimes 2 cm. long, erect from the beginning : 

 calyx more or less mealy, 6-8 mm. long, lobes oblong-obtuse : 

 corolla lilac ; tube 8-9 mm. long, only slightly exceeding the 

 calyx ; lobes of the corolla obcordate, 2-3 mm. long. 



This species has been confused with P. farinosa, but I think it 

 distinct. All specimens from the Rocky Mountain region under 

 that name differ from the European and especially the Scandi- 



