ako 
5. Spikelets orbicular, 3-3.2 mm. long. (Also, 
blades as long as or longer than the culm). 
Expected (P. circulare). 
5. Spikelets longer than broad, mostly under 
3 mm. long. 
6. Sheaths and blades very pilose; culms 
ascending to erect. Expected 
(P. longipilum). 
6. Sheaths and blades glabrous or sparsely 
piloses;*culms more spreading.......e..+... P.'daeve 
Paspalum setaceum Michx. 
Java Farm. One station: yard of burned house on road to 
springhouse. Hectare 3417, Partial canopy of Rhus typhina. Associate 
species: Digitaria ischaemum, Lonicera japonica, a, Trifolium repens, 
Lepidium virginicum, Clematis virginiana. Higman 386. 
P, floridanum Michx., var. glabratum Engelm. ex Vasey 
Java Farm. Infrequent: one station on Fox Point Road; 
associate species: Juncus tenuis, Eragrostis spectabilis, Plantago 
aristata. Also one station in Hog Island salt marsh; associate species: 
Distichlis spicata, Andropogon scoparius, Panicum virgatum, Juncus 
dichotomus. Higman 18, 299. 
Paspalum laeve Michx. 
Java Farm. One station: south-facing slope north of Phalaris 
arundinacea meadow, north of main building area. Hectare 2458, 
Spreading Rhus radicans, Campsis radicans, and Rubus spp.; few grassy 
spots. Associate species: Lespedeza repens, Hieracium scabrum. 
Higman 165. 
Panicum 
1. Basal leaves similar to culm leaves, not forming 
winter rosettes. 
2. Plants annual. 
3. Spikelets warty, tuberculate. Expected 
(P. verrucosum). 
3. Spikelets smooth. 
4. First glume about 1/4 as long as the spikelet, 
blunt, rounded, or truncate; sheaths glabrous; 
NOGESNeUADLOUS so cds eee oeccere se Meee e eRe. Gichotomiflorum 
