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Published In: Journal für die Botanik 1800(2): 8, 110. 1800[1801]. (J. Bot. (Schrader)) Name publication detail
 

Project Name Data (Last Modified On 7/9/2009)
Acceptance : Accepted
Project Data     (Last Modified On 8/5/2009)

 

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1. Botrychium Sw. (grape fern)

Vegetative portion of the leaf pinnately compound (lobed elsewhere), long-stalked or sessile, triangular in outline (linear to lanceolate elsewhere), the veins branched, not anastomosing. Fertile portion of the leaf erect, long-stalked, usually branched, the sporangia sessile to short-stalked, densely clustered along the branches. Fifty to 60 species, nearly worldwide.

In addition to the species keyed below, B. campestre W.H. Wagner & Farrar, the prairie moonwort, should be searched for in the loess hill prairies of northwestern Missouri. This species is widely scattered in Iowa and has been found in several counties in the southwestern part of that state, near the Missouri border. The prairie moonwort is a member of subgenus Botrychium and can be distinguished from other Missouri species by the sterile leaf portions, which are oblong to linear, with 2–5 pairs of linear to spatulate, lobed pinnae. It is a diminutive plant mostly less than 6 cm tall, and it is difficult to find in the dense prairie vegetation where it grows.

 

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1 Fertile portion of the leaf arising from the base of the leaf blade of the vegetative portion, the vegetative portion lacking its own stalk 3 Botrychium virginianum var. virginianum
+ Fertile portion of the leaf arising from the lower 1/3 of the common petiole, the vegetative leaf blade long-stalked (2)
2 (1) Vegetative portion of the leaf thin-textured, 2–3 times compound; uppermost pinnae mostly narrowly oblong, the base wedge-shaped, the tip usually obtuse 1 Botrychium biternatum
+ Vegetative portion of the leaf leathery, 2–4 times compound; uppermost pinnae lanceolate to linear, the base mostly truncate to rounded, the tip usually acute 2 Botrychium dissectum
 
 
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