18. 
EQUISETACEAE 
Equisetum arvense L. Common Horsetail 
Java Farm. One station: rubble of ruined house at main building 
area. Hectare 2580. Higman 752. 
LYCOPODIACEAE 
Lycopodium complanatum L. var. flabelliforme Fern. Groundpine 
Java Farm. Moderately abundant on north- and west-facing slopes 
of ridge between Muddy Creek valley and main building area. Hectares 
2477, 2478, 2487. Canopy of mature Pinus virginiana, Fagus grandifolia, 
Liriodendron tulipifera, Liquidambar styraciflua, etc. Higman 489. 
OPHIOGLOSSACEAE 
Botrichium 
1. Sterile blade sessile, about midway on the stalk; 
plant fruiting in spring. (Also, divisions of the 
sterile blade spatulate and serrate or cleft)......... B. virginianum 
1. Sterile blade on a petiole half the height of the 
stalk; plant fruiting in autumn. 
(Species typically has divisions of the sterile 
blade cleft into many linear notched teeth; in 
forma obliquum the divisions are broader and 
erenate=-serrulatettoient tre) ies sy... free tere coat elaieel ate B. dissectum 
Botrichium virginianum (L.) Sw. Rattlesnake Fern 
Java Farm. Moderately abundant in mature upland forest west of 
Muddy Creek valley. Canopy of Fagus grandifolia, Carya tomentosa, 
Quercus alba, Liriodendron tulipifera, etc. Associate species: 
Botrichium dissectum. 
Ivy Neck. Moderately abundant in mature forest of central 
Scaffold Peninsula. Canopy resembles that at Java Farm but lacks 
Fagus grandifolia. Same associate species. Higman 1241. 
Botrychium dissectum Spreng. (typical) Grape Fern 
Java Farm. Infrequent in same habitat as B. virginianum above. 
Also one station at north edge of Phalaris arundinacea meadow and base 
of south-facing slope (hectare 2469). Higman 155. 
B. dissectum forma obliquum (Muhl.) Fern. 
(var. obliquum (Muhl.) Clute) 
Java Farm. One station along northern border between Muddy Creek 
Road gate and Muddy Creek. Associated with typical form above. 
Ivy Neck. One station on Cheston Peninsula, in mature stand of 
Pinus taeda. Hectare 5719. Higman 1101, 1102. 
