210 



gentleman on May 7, 1906, at the place mentioned above, and is 

 in the herbarium of the New York Botanical Garden. Mr. Wm. 

 Harris, Superintendent of the Public Gardens at Jamaica, also 

 secured it later at the same place. 



Danthonia Shrevei Britton, sp. nov. 



A densely tufted perennial, with rigid thick coriaceous leaves, 

 and a short contracted terminal panicle. Stems erect, simple, 

 smooth and glabrous, excepting at the puberulent apex, 6-10 

 dm. tall ; leaves numerous in the tufts, mostly on the innovations, 

 those on the stem 2 or 3 ; sheaths straw color, those at the base 

 short and broad; ligule a scarious ring 0.5 mm. wide; blades 

 elongated, involute, the lower surface very rough, especially 

 toward the apex, usually hirsute near the base but otherwise gla- 

 brous, the upper surface glabrous; panicle 4—10 cm. long, the 

 axis and erect appressed branches puberulent ; spikelets few, on 

 short puberulent pedicels ; empty basal scales acuminate, smooth 

 and glabrous, the first scale scarious, i -nerved, a little shorter 

 than the second which is green with scarious margins, 5— 7-nerved, 

 and 9-10 mm. long ; flowering scales with a hairy callus, 1-1.5 

 mm. long, the body of the scale, exclusive of the awns and 

 callus, 5-7 mm. long, 9-1 1 -nerved, appressed-hirsute toward the 

 base, glabrous elsewhere, the teeth running out into awns 4-6 

 mm. long, the central awn spreading at right angles or nearly so, 

 I — 1.5 cm. long. 



George V. Nash 



REVIEWS 



Ward's Trees * 



In this last volume, as in the others of the series, only English 

 trees are included. Readable chapters on stems, branching, 

 bark, climbing plants, and non-typical shoots form the first part 

 of the book. The second includes shrub and tree keys based on 

 shape and habit characters, as illustrated by the following ex- 

 tracts : (i) Crown expanded and depressed, forming an umbrella- 

 like or mushroom-like head on the elongated stem ; (2) bark orange 

 or sienna and cast in large scales in the upper part of the stem ; 

 (3) cones erect or outstanding ; (4) leaves isolated and extended in 



* Ward, H. Marshall. Trees : A Handbook of Forest Botany for the Woodlands 

 and the Laboratory. Vol. V. Form and Habit. Pp. 308. f. 209. 1909. Cam- 

 bridge University Press (Putnam's, New York). 



