101. 
Acnida 
Acnida cannabina L. Water Hemp 
Java Farm and Ivy Neck. Infrequent in salt marshes, seems to 
prefer drier parts of marsh, also sandbars or low hummocks. Associate 
species: Distichlis spicata, Spartina patens, Panicum virgatum, 
Baccharis halimifolia, Gerardia maritima, Juniperus virginiana. Higman 
My Siz /ake 
Amaranthus 
1. Spines absent from axils of leaves; utricle 
circumscissle, the top falling off as a lid. 
2. Plant slender; blades of principal leaves .5 
to 7 cm. long; flowers in small axillary 
clusters; stamens 2 or 3. Expected (A. albus)... 
2. Plant stout; blades of principal leaves 5 to 
30 cm. long; flowers monoecious in terminal and 
axillary simple or panicled spikes; stamens 5. 
3. Calyx of pistillate flowers about 3 mm. long, 
the bracts 2 to 3 times this length. 
Expected (A. retroflexus). 
3. Calyx of pistillate flowers 1.5 to 2 mm. 
long, the bracts slightly longer to twice 
as long. 
4, Lateral spikes of terminal panicle divergent; 
bracts red or purple; utricle longer than 
calyx. Expected (A. cruentus). 
4, Lateral spikes of terminal panicle ascending 
to erect; bracts green to red-tinged; 
utricle shorter than to equalling the 
Cally Xccjelolle sw e\le] evelislinielieje eisiele elec elssl eee ainie'o) cjleveisieielels Pata MyiDIStGUS 
1. Spines paired in axils of leaves; utricle bursting 
Peres Ar My cic) cies) veils) elele\ eis! ele avers ois e) oleie-s) «she elles aioe eee eels) sie) Ae) SPANOSUS 
