Colorado Weed Seeds 
0 / 
_ Sno\v-on-tiie-Mountain, White- 
MARGINED SPURGE {EuphorMa mar- 
Pursh., Lcpadenia marginata 
(Pursh.) Niewl.) (Fig. 99). — Seeds 
W dull, castor-gray or white in color, 
y 3. 9-4. 2 mm. long, 2.8-3 mm. wide, 
\Hu broadly oval in outline, circular in 
~ :Toss-section ; surface netted, marked 
, with rounded projections; a seam- 
Fig. 99. Snow-on-the-Moun- like dark ridsre upstIv a*? lnn<* ckj 
tain (Euphorbia marginata). ’ nearly as loag as 
P'ruit (right), nutlet (leit). the seed is often distinct on ore 
X 5. 
side. 
20. MALLOW FAMILY 
{Malvaceae) 
. Fruit usually a capsule, seldom a berry; seeds either kidney- 
shaped, circular in outline, nearly globular, or egg-shaped ; endo- 
sperm little or abundant; embryo curved; cotyledons large. 
, Key to Genera 
Seeds slightly flattened; cordate in shape 1 AhuUin'ii 
Seeds distinctly flattened 
Seeds renlform tn shape, 1.3-2 mm. long 2 . .Malvastrnm 
^ Seeds nearly circular in outline, 1.2-1. 5 mm. long Z..Malva 
1. Indian Mallow 
(Ahutilon (Tourn.) Mill.) 
[ Seeds numerous, more or less short, 
ikidney-shaped ; embryo curved ; cotyledons 
'large. 
, Velvet Leaf, Indian Mallow (Ahutilon 
\theophrasti Medic., Ahutilon ahutilon (L.) 
Pushy.) (Fig. 100).— Seeds, dull, scurfy, 
mouse-gray in color, 3-3.5 mm. long, sidef. 
somewhat flattened, notched at one end, the 
ddge, from the longer projection formed by 
:he notch, terminating in a lip-like shelf, 
vhich covers the base of the notch , Velvet Leaf 
(Abutilon theophrasti). x 
2. Scarlet Mallow, False Mallow 
(Malvastrmn Gray., Sphaeralcea St. HU.) 
Fruit circular in outline, flattened, splitting up into a number of nut- 
jets at maturity; nutlets seldom splitting open; seeds short, kidney-shaped 
fattened. 
r ALSE MALLOW, Red False Mallow ( Malvastrum 
cocxinemn (Pursh.) Gray., Sphaeralcea coccineu 
(Autt.) Rydh.) (Fig. 101). — Nutlets cinnamon-buff 
in color; seeds olive-gray in color, flattened, often 
:t. ^ fleep pit on each side, notched at the end. 
Fig. 101 . False kidney-shaped, 1.3-1.7 mm. long, 1-1.3 mm. wide, 
S.''’'^coSneVmV ; nutlets nearly circular in outline, the e-l,ee 
^14. ■ Sharp on one side, sides wrinkled, flat. 
