10 
(X)LORADO Experiment Station 
Pig-, 6 — Seedlings of whorled milkweed. A. Seven days after planting. B. 
Twenty-one days after planting. C. Twenty-eight days after plant- 
ing. Note that the first foliage leaves are in pairs. 
a small group of onion blossoms, tho in the case of the milk- 
weed the clusters of blossoms are borne in axils of the leaves as 
well as terminally (Fig. 8). 
The pods are erect, long-pointed above and short pointed 
below. They may be borne singly or in clusters, as shown in 
Figure 9. Thev are commonly from 21/2 inches to 4 inches long. 
Each pod is filled with closely packed, flat, reddish-brown seeds 
to each of which is attached a number of white silky hairs which 
facilitate spreading to a marked degree (Fig. 10). 
