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botryche élancé, lance-leaf grapefern, lance-leaf moonwort, red triangle moonwort, triangle moonwort

blunt-lobe grape-fern, blunt-lobed grapefern, botryche d'oneida, botryche du lac onéida

Pinnae

to 5 pairs, ascending, approximate, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs, linear to broadly lanceolate, entire to divided to tip, margins with distinct lobes or segments, apex acute to rounded, venation pinnate.

to 5 pairs, usually remote, horizontal to ascending, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs, undivided except in proximal 2/3–3/4.

Trophophore

stalk 0–1 mm;

blade dull to shiny green to dark green, deltate, 1–2-pinnate, to 6 × 7 cm.

stalk 2–15 cm, 1.5–2.5 times length of blade rachis;

blade dull bluish green, ± plane, 2–3-pinnate, to 15 × 20 cm, ± leathery.

Sporophores

1–3-pinnate, 1–2.5 times length of trophophore, divided into several equally long branches (all other botrychiums have a single stalk or 1 dominant and 2 smaller).

2–3-pinnate, 1.5–2.5 times length of trophophore.

Pinnules

obliquely ovate, margins finely crenulate to denticulate, apex rounded to acute, venation pinnate.

2n

=90.

=90.

Botrychium lanceolatum

Botrychium oneidense

Phenology Leaves green over winter, sporophores seasonal, new leaves appearing in spring.
Habitat In moist, shady, acidic woods and swamps
Elevation 0–1200 m (0–3900 ft)
Distribution
from FNA
AK; AZ; CO; CT; ID; KY; MA; ME; MI; MN; MT; NH; NJ; NM; NV; NY; OH; OR; PA; RI; TN; UT; VA; VT; WA; WI; WV; WY; AB; BC; NB; NF; NS; ON; QC; SK; YT; Eurasia
[WildflowerSearch map]
[BONAP county map]
from FNA
CT; DC; DE; IN; KY; MA; MD; ME; MI; MN; NC; NH; NJ; NY; OH; PA; RI; VA; VT; WI; WV; NB; ON; QC
[WildflowerSearch map]
Discussion

Subspecies 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Botrychium oneidense commonly occurs with B. dissectum and B. multifidum. Young individuals of both may resemble B. oneidense (W.H. Wagner Jr. 1961b).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Trophophore blade green to pale yellow-green, broad, coarse, succulent; middle and terminal segments usually more than 2 mm wide exclusive of lobes.
subsp. lanceolatum
1. Trophophore blade dark green, slender, delicate but firm; middle segments usually less than 2 mm wide exclusive of lobes.
subsp. angustisegmentum
Source FNA vol. 2. FNA vol. 2.
Parent taxa Ophioglossaceae > Botrychium > subg. Botrychium Ophioglossaceae > Botrychium > subg. Sceptridium > sect. Sceptridium
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. 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, B. virginianum
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. pallidum, B. paradoxum, B. pedunculosum, B. pinnatum, B. pseudopinnatum, B. pumicola, B. rugulosum, B. simplex, B. spathulatum, B. virginianum
Subordinate taxa
B. lanceolatum subsp. angustisegmentum, B. lanceolatum subsp. lanceolatum
Synonyms Osmunda lanceolata B. ternatum var. oneidense, B. dissectum var. oneidense, B. multifidum var. oneidense
Name authority (S. G. Gmelin) Angström: Bot. Not. 1854: 68. (1854) (Gilbert) House: Amer. Midl. Naturalist 7: 126. (1905)
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