Vor. II.] 
7. Trifolium médium L. Zig-zag 
Clover. Cow- or Marl-grass. 
(Fig. 2076.) 
T. medium 1,, Amoen. Acad. 4: 105. 1759. 
Closely resembling the preceding species. 
Stem sometimes conspicuously zigzag, but 
often straight, finely pubescent or glabrate. 
Stipules lanceolate; leaflets lanceolate or ob- 
long, not spotted, frequently entire except 
for the projecting tips of the veins; heads al- 
ways more or less peduncled; corolla 6//— 
7’’ long, bright purple; calyx-tube nearly 
glabrous, the teeth slightly pubescent. 
In fields and waste places, Nova Scotia and 
Quebec to New York, west to Missouri. Also 
on Vancouver.Island. Adventive or naturalized 
Native also of Siberia. Summer, 
from Europe. 
g- Trifolium Virginicum Small. 
Prostrate Mountain Clover. 
(Fig. 2078.) 
Trifolium Virginicum Small, Mem. Torr. 
Club, 4: 112. 1894. 
Perennial from a long large root, diffusely 
branched at the base, the branches pros- 
trate, pubescent. Leaflets linear, narrowly 
lanceolate or oblanceolate, 5//-20’’ long, 
obtuse or cuspidate, serrate-dentate, gla- 
brous above, more or less silky beneath, con- 
spicuously veined; flowers in a globose head 
about 1’ in diameter, whitish, crowded, the 
slender pedicels 1’’-2’’ long; standard emar- 
ginate-mucronate, striate; calyx silky, the 
teeth long, subulate. 
Slopes of Kate’s Mountain, Greenbrier Co., 
W.Va. June. 
PEA FAMILY. 
277 
<7 
7 
FT 
fi 
8. Trifolium Beckwithii Brewer. 
Beckwith’s Clover. (Fig. 2077.) 
Trifolium Beckwithii Brewer; S. Wats. Proc. 
Am, Acad. 11: 128, 1876. 
Perennial, glabrous throughout; stems 
rather stout, erect or nearly so, straight, 6/— 
18’ high. Basal leaves on long petioles; sti- 
pules narrow, acute, 1/ long or less; leaflets 
oblong, or somewhat oblanceolate, obtuse, 
denticulate, 9’’-2’ long; heads long-pedun- 
cled, globose, 1/-114’ thick; flowers purple 
or purplish, 6’’-9/7 long, very short-pedi- 
celled, the lower at length reflexed; calyx- 
teeth glabrous, linear-subulate, the longer 
nearly equalling the tube; pod 2-6-seeded. 
Eastern South Dakota, probably introduced 
from farther west. Native from Montana to 
California. May-June. 
