23ot7'ychium virginianum Sw. 1. c. 1 1 1. Eaton ^ 
1878. Ferns N. Am. i : 253. t. 33 ; in Gray, 
Man. 695. Unde7'w, in 111. Fl. 1:4; Native 
Ferns 74; in Britt. Man. 4. Clute^ Ferns 41. t. 
I. Waters, Ferns 35. 337. 
ViiiGiNiAN Grape Fkrn. 
Plants 2-6 dm. high ; the divisions of the ternate leaf- 
segment 2-pinnate ; sporophyll 2-3-pinnate, long-stalked 
sometimes forking near its middle forming two panicles ; 
pinnules of the sterile segment are occasicnally spore- 
producing. [Torreya 5 : 160. f. i.] 
Frequent in rich woods. June- August. 
A s]e'i:hr ii^x w^B . griclle Pirsh iS[4. Fl. A n. Ssp^ 
2 : 656.] is occasionally found with the tvpe. 
It Sterile leaf ^ segment ternate ^ stalked . 
* Pinnules obliquely ovate or ohlcng-la7tceo^.ate, 
2. B. obliquum Muhl. PI. I. 
Ptinaria mitltifido folio crasso , , , ex Terra 
Mariana . ,Pluk, 1700. Mant. 120. t.427. f. 7. 
Botrychinm obliquum Muhl. ; Willd. 1810. Sp. 
PI. 5 : 63. Ujtderw. Nat. Ferns 72 ; in Britt. 1. 
c. 3. Clute^ 1. c. 54. Waters^ 1. c. 327. 
JB. ternatum var. obliquum Eatoit^ 1. c. i : 149. 
t. 20. f. 2 ; in Gray, 1. c. 694. Underw, in 111. 
Fl. 1:3. ■ 
Grape Fern. 
Plants 2-5 dm. high ; the divisions of the ternate, ster- 
ile leaE-s2g n3iit 2-piaiixtiEid or 2-piLin:it2; phiiiules ob- 
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