Flora of North America species comparison

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Botrychium virginianum

botryche de virginie, common grapefern, rattlesnake fern
Pinnae

to 12 pairs, usually approximate to overlapping, slightly ascending, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs, lanceolate, divided to tip.
Trophophore

sessile;

blade pale green, 3–4-pinnate, to 25 × 33 cm, thin, herbaceous.
Pinnules

lanceolate and deeply lobed, lobes linear, serrate, apex pointed, venation pinnate, midrib present.
Sporophores

2-pinnate, 0.5–1.5(–2) times length of trophophore.
2n

=184.

Botrychium virginianum
Phenology Leaves seasonal, appearing in early spring and dying in late summer.
Habitat Common to abundant, especially in shaded forests and shrubby second growth, rare or absent in arid regions
Elevation 0–1500 m (0–4900 ft)
Distribution
from FNA
AK; AL; AR; AZ; CO; CT; DC; DE; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; ND; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SC; SD; TN; TX; UT; VA; VT; WA; WI; WV; WY; AB; BC; MB; NB; NF; NS; NT; ON; PE; QC; SK; YT; Mexico; Central America; South America in Brazil; Colombia; Ecuador; Peru; Eurasia
Discussion

Botrychium virginianum is the most widespread Botrychium in North America.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 2.
Parent taxa Ophioglossaceae > Botrychium > subg. Osmundopteris
Sibling taxa
B. acuminatum, B. ascendens, B. biternatum, B. boreale, B. campestre, B. crenulatum, B. dissectum, B. echo, B. gallicomontanum, B. hesperium, B. jenmanii, B. lanceolatum, B. lunaria, B. lunarioides, B. matricariifolium, B. minganense, B. montanum, B. mormo, B. multifidum, B. oneidense, B. pallidum, B. paradoxum, B. pedunculosum, B. pinnatum, B. pseudopinnatum, B. pumicola, B. rugulosum, B. simplex, B. spathulatum
Synonyms Osmunda virginiana
Name authority (Linnaeus) Swartz: J. Bot. (Schrader) 1800(2): 111. (1801)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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