106 I. M. JOHNSTON 



Primus demissa Walp. Scarce on the south side of the mountains, but common on 

 the north side. Especially abundant in Prairie Fork between 5000 and 7000 

 ft. alt. Afew plants grow on the Devils Backbone at 9000 ft. alt. The species 

 is confined to the Transition Zone. (Nos. 1384, 1402, 1712.) 



Primus ilicifolia Nutt. In San Antonio Canon this enters a short distance up 

 into the pine belt. 



Primus emarginata, Walp. We know the plant from only two stations, both of 

 which are in the Transition Zone, one in the lower part, the other in the 

 upper. Coldwater Fork Ly tie Creek, alt. 5750 ft. and near the head of San An- 

 tonio Canon at 7600 ft. Dr. Hall collected the species also at 5700 ft. in Lytle 

 Creek (No. 1471) as well as "north of San Antonio Peak at 8500 ft. alt." 

 Our plant is a shrub which is seldom higher than 1§ meters and is similar in 

 pubescence to the var. mollis Brew. (Nos. 1666, 1680, 2079.) 



Rosa Californica Cham. & Sch. Barely entering the pine belt. 



Rosa gratissima Greene. Several large thickets of this rose were found in a 

 moist meadow near the Native Son Mine in Prairie Fork. 



Specimens were sent to Dr. Rydberg who determined them as R. mohavensis 

 Parish. Mr. Parish, however, is very unwilling to see our plants referred to 

 this species so we are following Abrams (Bull. N. Y. Bot. Gard. 6: 380, 1910) 

 in referring this form, which he collected in Swartout Canon, to R. gratissima. 

 In Rydberg's key (Bull. Torr. Bot. Club 44: 65, 1917) our plant seems to fall 

 into R. mohavensis. Our plants, as well as those collected by Hall (No. 1513) 

 at 6200 ft. alt. in Swartout Valley, differ from the roses collected near the type 

 station of R. mohavensis in being more or less distinctly bicolored, slightly 

 puberulent, darker, and not at all shiny. (No. 1704.) 



LEGUMINOS^E 



Lupinus Grayi Wats. We are placing under this species all our lupines which 

 have a woody caudex. The species thus defined contains two well marked 

 forms which after some study may prove to be distinct species. On the south 

 side of the mountains the plants are low, seldom over 2 dm. high, and com- 

 pact. The racemes are few flowered and the leaves are small, never over 2.5 

 cm. wide, and rather short petioled, 1-2.5 times as long as the leaves. On the 

 north side of the mountain the stems are very much higher, 3-7 dm. high while 

 the plant is very open. The racemes are many flowered, the leaves are all 

 over 3 cm. wide and the petioles are 3-5 times the length of the leaves. The 

 stems of this second form very much resemble the branches of L. Hallii, in- 

 deed if the evidence of caudex were destroyed on one of the taller specimens 

 of this form we very much doubt whether they could be distinguished from 

 that species. 



Common in dry open ground under the pines in the Lower Transition Zone. 

 The color range of this species is considerable. In most any colony, a color 

 series is usually obtainable, ranging from pure white through pink to dark 

 blue. (Nos. 1479, 1491, 1492, 2064, 2078.) 

 Lupinus formosus Greene. Common on dry slopes with the last and descending 

 to the valleys. 



We feel certain that there are too many forms referred to this species 



