PLANTS FROM NORTH DAKOTA T57 
sides. Peduncles 0.5-1 cm. long. Flowers not seen, but presumably 
very small, corymbose or solitary. Receptacle smooth. Sepals 
lanceolate, entire or lobed, white-woolly within and on the margins, 
glandular-pubescent and parallel-veined on the back. Fruit red, 
globular or pyriform, 6-10 mm. in diameter. 
Collected by the writer on a bare gravelly desert-like plain 
at Pleasant Lake, Benson County, on July 2 and August 14, IgIr. 
Rosa heliophila foliosissima var. nov. 
- ° Foliola minuta, sessilia, subsessilia vel petiolulata, 1-8. 
singula vel gemina, in rachi inter foliola solita dispersa. 
Scattered on the rachis between the usual pairs of leaflets 
are 1-8 small leaflets, single or in pairs, sessile, subsessile or 
petiolulate. 
Found by the writer in wet soil at Butte, Benson County, 
on August 28, I9gII. 
Stevronema pumilum longipedicellatum var. nov. 
Pedicelli 3-5 cm. longi, gracillimi, varie curvati (typici tantum 
2-3 cm. longi). 
While the pedicels of the type are 2-3 cm. long only, they 
are 3-5 cm. long in this variety, very slender, and curved variously. 
Collected by the writer in high grass on low land along a 
couleé at Leeds, Benson County, on August 5, 1909. 
Rudbeckia flava perbracteata var. nov. 
Bracteae involucri amplae, 2.5-3 cm. longae (speciei 1.5-2 
cm. longae), flores radiatos late transcendentes. Caulis ramosus, 
usque apicem foliosus, foliis amplitudine aequalibus. 
Involucral bracts large, 2.5-3 cm. long (in the species 1.5-2 
em. long), far surpassing the rays. Stem branched, leafy to the 
top, with leaves of equal size. 
Collected by the writer in rich soil at Butte, Benson County, 
on August 28, I9gII. 
Thalictrum thyrsoideum silvanum var. nov. 
Caules de singulis vel binis fascibus radicum numerosarum, 
fibrosarum, carnosarum aeque vel perpendiculariter currentes 
saepe 1-3 dm. priusquam e solo emergunt, solitarii vel nonnulli, 
in plantis robustis de axillis ramosi, secus simplices. Folia am- 
