1915) A handy Book on Trees and Shrubs. (Review) 103 
nentibus, lemmis ad basim glabris supra pulverulentis, exteriori 9 mm. 
longo acuto, interiori 8 mm. longo obtuso, antheris 1.5 mm. longis, 
palea semen oblongum (5 mm. longum, 1 mm. latum) arcte amplectenti. 
Tufted perennial, 2.5-4 dm. high: the culm slightly striate and quite 
smooth: leaf-sheaths loose, deeply striate, cellular-reticulate in the 
channels; ligule scarious and very short (1 mm. long); leaf-blades 
linear (4-14 cm. long, 2-6 mm. broad) smooth, deeply striate: spike 
6-11 em. long, 6-10 mm. thick: spikelets appressed, paired, or often 
single at the base of the spike, 1-3-flowered; the upper flower sterile: 
glumes lanceolate, 10-15 mm. long, 1.5-4 mm. broad, with 4-7 
prominent raised strigose nerves: lemmas glabrous at base, pulveru- 
lent above; the outer 9 mm. long, pointed; the inner 8 mm. long, 
blunt: anthers 1.5 mm. long: palea closely investing the grain: grain 
oblong, 5 mm. long, 1 mm. broad. | CALIFORNIA: sea cliffs, Champion 
gulch, below Westport, Mendocino Co., August 1, 1902, J. W. Congdon 
(TYPE in U. S. Nat. Herb.); sea cliffs below Westport, August 1, 1902, 
J. W. Congdon. 
Key ta the Species and Varieties Discussed. 
A. Grain 6-10 mm. long: anther 4.5-6.5 mm. long: leaf blades scabrous 
above, 
B. Spikelets normally more than two at a node: glumes awl-shaped: 
lemmas pubescent up to the middle............... E. giganteus Vahl. 
B. Spikelets normally paired: glumes lanceolate or linear-lanceolate: 
lemmas pubescent to the tip, 
C. Summit of culm glabrous: glumes stiff and hard, 1- rarely 3-nerved, 
often glabrous and shining..............- eee E. arenarius L. 
C. Summit of culm velvety-pubescent: glumes 3-5-nerved, 
Spikelets sessile: glumes pliant, softly villous, or rarely glabrate 
E. arenarius L., var. villosus E. Mey. 
Spikelets pedicelled: glumes stiff, hispid or glabrate 
E. arenarius L., var. compositus (Abro.) St. John. 
A. Grain 5 mm. long: anther 1.5 mm. long: leaf blades smooth: summit 
of culm glabrous: glumes scabrous, prominently 4-7-ridged: lemmas 
glabrous at base, pulverulent above............. E strigatus St. John. 
HARVARD UNIVERSITY. 
A HANDY Book on TREES AND SHRUBS.— The ever increasing books 
intended to simplify the determination of the common plants has 
received a notable addition in another of Mr. Mathews’s volumes. 
The Field Book of American Trees and Shrubs} is more ambitious in 
1FigLD Book or AMERICAN TREES AND SuHRuBs. By F. Schuyler Mathews. pp. 
465 + xvi, freely illustrated. Cloth $2.00; full leather, $2.50; postage 15 cents. 
G. P. Putnam’s Sons, New York. 
i d b 
