pycnocarpa (rock cress), Botrychium
virginicum (rattlesnake fern), Bromus ciliatus (fringed brome), Bromus latiglumis (ear-leaved brome), Carex grisea (inflated narrow leaf sedge), Carex leavenworthii (Leavenworth sedge), Carex molesta (troublesome sedge), Elymus villosus (hairy wild rye), and Ulmus rubra (slippery elm).
The shoot of Botrychium
interpreted as a series of dichotomies.
Electron microscopic investigation of the coating found on torus-bearing pit membranes of Botrychium
dissectum, the common grape fern.
Sterile leaf blades pinnately dissected; veins free; fertile stalk with pinnately branched (grape-like) sporangial clusters Botrychium
The checklist includes the lower vascular plants Botrychium
virginianum (Ophioglossaceae), Cystopteris fragilis (Polypodiaceae), Equisetum arvense, E.
Fern Clade #3 consists of the eusporangiate ferns Ophioglossum + Botrychium
In addition, Acalypha deamii (stare imperiled), Aesculus flava (state watch list), and Botrychium
biternaturn (state watch list) have been reported here (R.
Wofford & Patrick, 1980), Botrychium
Herbaceous and fern species occurring only in this habitat include Apios americana, Arisaema dracontium, Botrychium
Recent detailed investigations of shoot development in Botrychium
(Imaichi, 1989; Imaichi & Nishida, 1986) indicate that a regularly segmenting tetrahedral shoot apical cell is usually identifiable.
eugeniae I IV Dianthus deltoides IV II Gentiana lutea I IV Rumex nebroides I IV Potentilla rigoana V V Botrychium
lunaria I .
Finally, the two most common ferns of the older woods are Botrychium
virginianum and Cystopteris protrusa.