WOOTON AND STANDLEY FLOEA OF NEW MEXICO. 407 



There is room for considerable doubt concerning the validity of the numerous seg- 

 regates of this group recently proposed. The differences between the species are 

 mostly variations in leaf outline. Upon a single shrub one finds great variation in 

 this respect, so that it is questionable whether it is wise to maintain more than a 

 single species of the group, S. trilobata. There is some variation in pubescence, but 

 this is only in quantity. Doctor Greene speaks of certain glabrous plants, but we 

 have been unable to find any that are truly glabrous. Field study is necessary to 

 determine with any degree of precision the exact relationship between the numerous 

 forms. 



1. Schmaltzia affinis Greene, Leaflets 1: 135. 1905. 



Type locality: "Shi'ub of southern Utah deserts, collected at Kanab, Springdale, 

 and Silver Reef." 



Range: Southern Utah to northern Arizona and northwestern New Mexico. 



New Mexico: Carrizo Mountains (Standley 7338). Dry hills among rocks, in the 

 Upper Sonoran Zone. 



This is probably an extreme variant of S. trilobata, influenced largely by the verj'- 

 arid situations in which it grows. The leaves are commonly unifoliolate, but some- 

 times they are cleft nearly to the base, and frequently the plants bear a few trifo- 

 liolate leaves. 



2. Schmaltzia emoryi Greene, Leaflets 1 : 133. 1905. 



Rhus trilobata mollis A. Gray; Patterson, Check List 21. 1892. 



RMis emoryi Wooton; Greene, op. cit. 134, as syuonym. 



Type locality: "Hills and low mountains of eastern and southern New Mexico." 

 Type collected by Wooton (no. 584). 



Range: Southern New Mexico and Aiizona. 



New Mexico: Horse Camp; Mangas Springs; Burro Mountains; Dog Spring; moun- 

 tains west of San Antonio; Organ Mountains; Mesilla Park; ^^^lite Sands; Roswell; 

 Peiico; Queen; south of Ton-ance. Dry liills and valleys, in the Lower and Upper 

 Sonoran zones. 



3. Sclimaltzia pulcliella Greene, Leaflets 1: 134. 1905. 

 Type locality: "Toward the Rio Limpio, western Texas. 

 Range: Western Texas and southeastern New Mexico. 



New Mexico: Queen (Wooton). Dry hills, in the Upper Sonoran Zone. 



4. Schmaltzia leiocarpa Greene, Leaflets 1: 133. 1905. 



Type locality: Valley of the Rio Grande at Mesilla, New Mexico. Type collected 

 by Wooton (no. 48). 



Range: Southern New Mexico and southeastern Arizona. 



New Mexico: Reserve; Black Range; San Luis Mountains; Mesilla; Dona Ana 

 Mountains; above Tularosa; Cloudcroft; Lincoln National Forest. Mesas and river 

 valleys, in the Lower Sonoran Zone. 



5. Schmaltzia cognata Greene, Leaflets 1: 141. 1905. 



Type locality: Durango, Colorado. 



Range: Southern Colorado and northwestern New Mexico. 



New Mexico: Tuniteha Mountains; Cedar Hill. Dry hills, in the Upper Sonoran 

 Zone. 



6. Schmaltzia quercifolia Greene, Leaflets 1: 141. 1905. 



Type locality: Canyons in Seward County, southwestern Kansas. 

 Range: Kansas to northeastern New Mexico. 



New Mexico: Glorieta; Folsom; Nara Visa; Raton. Low hills and open plains, 

 in the Upper Sonoran Zone. 



