1925) REHDER, NEW SPECIES, VARIETIES AND COMBINATIONS 207 



p. 148 (in Ber. Bayer Bot. Ges. xv. [1915]) refers Wenderoth's variety as a 

 form to typical S. repens and considers it distinct from var. armaria, but 

 von Seemen (in Ascherson & Graebner, Syn. Mitteleur. FL iv. 126 [1909]) 

 unites both under var. armaria and I see no perceptible difference between 

 Seringe's type (Saules de la Suisse, no. 62) which I have before me and 

 specimens referred by Toepffer to var. arenaria or var. argentea. 



Quercus Stewardii, spec. nov. 



Frutex 3-metralis ramulis glabris annotinis fusco-purpureis lenticellatis. 

 Folia decidua, brevissime petiolata et in apice ramulorum congesta, ly- 

 rato-obovata, 7-11 cm. longa et 4.5-7 cm. lata, utrinque lobis brevibus ob- 

 tusis 10-14 et tot venis 4-6 mm. distantibus, supra laete viridia et glabra, 

 subtus glaucescentia, secus costam basin versus et ad basin venarum 

 inferiorum tomento floccoso detersili instructa; petioli 2-4 mm. longi. 

 Fructus in apice ramulorum circiter 6-7 congesti subsessiles, cupula hemi- 

 sphaerica circiter 1 cm. alta et intus 1.5 cm. lata, bracteis tenuibus pallide 

 brunneis extus tenuiter villosis, inferioribus brevioribus exceptis lineari- 

 lanceolatis vel linearibus ad 8 mm. longis basi leviter appressis supra 

 recurvis scariosis, glande (nondum perfecte matura) subglobosa circiter 

 12 mm. diam., apice depresso et manifeste umbilicata. 



China. Anwhei : Wang shan, in forest at summit, alt. 2000 m., A. N. 

 Steward, no. 1317, August, 1924 (Herb. Univ. Nanking, no. 7182; type). 



This new species seems most nearly related to Q. obovata Bunge which it 

 resembles in the character of its cupula but the scales are much shorter 

 than in that species, and the branchlets and the much smaller leaves are 

 glabrous except a slight floccose tomentum along the midrib on the under 

 side of the leaves. The leaves are similar to those of Q. mongolica Fisch. 

 and particularly of its variety grosseserrata Rehd. & Wils., but they are 

 distinctly lyrate in outline, the lobes are obtuse, not acutish and the veins 

 are closer together, while the fruits are entirely different. Though this 

 new species is in some respects intermediate between Q. obovata and Q. 

 mongolica, it is quite different in leaf and fruit from Q. McCormickii Car- 

 ruthers which is considered a hybrid between these two species. 



Ulmus hollandica var. Dauvessei, comb. nov. 



Ulmus montana var. Dauvessei Nicholson, Kew Handlist Arb. n. 139 (1896), 



name only. 

 Ulmus campestris var. Dauvessei Hort. ex Nicholson, 1. c. 

 Ulmus Dauvessei Henry in Elwes & Henry, Trees Gr. Brit. Irel. vn. 1874 



(1913). 

 This Elm belongs apparently to one of the numerous hybrids of Ulmus 



glabra Huds. with U. foliacea Gilib. and perhaps U. procera Salisb. which 



may be classed under the name U. hollandica Mill. It resembles U. glabra 



in the pubescence of its branchlets and leaves, but the latter are smaller 



and comparatively broader and of thinner texture and the petioles are up 



to_6 mm. long; it is of broad-pyramidal habit with ascending branches. 



