landieri of that region. It was obtained for me at, or rather in the mountains 30 miles north of 

 Phoenix, Arizona, by Dr. Turner; at Chloride, New Mexico, by Mr. Parker, and near Prescott, 

 Arizona, in the Bradshaw Mountains, by Mr. D. Hatz. No wild or artificial hybrids are yet known 

 to the writer, nor does there seem much of value in the species. It endures cold and drouth we 1 !, 

 but excessive moisture injures it, causing mildew and rot. It grows better in sandy than heavy 

 soils. It grows easily from cuttings. 



21. VITIS TRELEASEI, Munson. (See Plate XXXI.) 



Plant: Much branched, shrubby, climbing little, foliage shining, lively green. 



Roots: Slender, wiry, little wrinkled transversely; in one year seedlings axial, tapering from 

 collar downward. 



Wood: Mature, pale, bark splits after first year and separates into thin somewhat fibrous 

 plates; nodes little or not at all enlarged, straight; diaphragm generally twice as thick as in 

 V vulpina, about 1/16 of an inch, slightly biconcave; buds small globose, whitish woolly, both 

 when dormant and in expanding; tendrils small, generally shorter than the leaves and mostly 

 once forked, smooth, or sparingly downy; deciduous first year, unless clasping some object, 

 then holds feebly; internodes short 1' to 3'. Growing lips naked, as in V. cordifolia. 



Leaves: Stipules about 1/12' long, thin membranaceous ; petiole generally more than half 

 as long as width of blade, cylindrical grooved on upper side, faintly str'ate, smooth or thinly 

 pubescent, same as tendrils and young wood, bright red when young; blade 3' to 5' wide, and 

 mostly wider than long, excluding petiole; basal sinus broad n shaped, and no angle at inser- 

 tion of petiole, often having shallow acute sinuses either side of central lobe, teeth rather broad, 

 two ranked, very acute pointed, angles between teeth acute or right angled. The leaf generally 

 appears in outline about midway between V. vulpina and V. cordifolia. Pairs of nearly opposite 

 ribs 5 or 6, both upper and lower surfaces smooth, shining except in the axils of and along the ribs there 

 is short pubescence; wide open or curving backward somewhat around marqin as in V. Arizonica. 



Cluster: Small, 2 'to 3', peduncle and rachis smooth or having few cottony hairs, slender; 

 peduncles 1/5' to 1/4', little or not at all warty, enlarging moderately at summit. 



Flowers: Fertile, have stamens recurved, disc distinct, lobed, ovary globose, style short, 

 thick, stigma broad; staminate; stamens ascending, slender, pollen grains small. 



Berries: 1/4' to 1/3' in diameter, covered with thin bloom, spherical, black, skin thin, juice 

 red, pulp juicy, vinous, pure, sweet, of very agreeable flavor. 



Seeds: Mostly 2, varying from 1 to 3, 1/5' long by 1/6' broad, obcordate, variable, beak 

 short, blunt, raphe a fine thread prominent over top of seed to chalaza; chalaza prominent, 

 narrow. 



Foliation and inflorescence, considerably later than in V. vulpina, and earlier somewhat 

 than V. Arizonica, ripening of fruit late, exfoliation late. Less vigorous than V. vulpina, but 

 endures drouth immensely better. 



Observed in Bear Canon near Albuquerque, N. M., McCarty, N. M., Truxton, Flagstaff, 

 and Canon Diablo, Arizona, and have had it collected among Bradshaw Mountains, Arizona, 

 by D. Hatz, and in Goat Creek Canon, Brewster Co., Texas, by E. L. Gage. 



Relationship: It appears to stand midway between V. vulpina and V. Arizonica. In its 

 eastern range, it leans more to V. vulpina, and in its western to V. Arizonica. Its region covers 

 New Mexico and Arizona, but culminates in the northern parts of this extensive region, while 

 V. Arizonica culminates in the southern part. Thus it separates, or connects V. vulpina with 

 V. Arizonica. 



I first obtained specimens of it in 1887, from the Bradshaw Mountains, Arizona. 



The description should be confirmed by comparing a greater number of specimens from 

 numerous localities. 



I dedicate the species to my friend Doctor Wm. Trelease. 



It has little or no viticultural value. It is very sensitive to downy mildew and black rot. 



92 



