Cryptogramma acrostichoides

R. Brown in Franklin

in Franklin,Narr. Journey Polar Sea 754, 767. 1823.

Common names: American parsley fern
Illustrated
Synonyms: Cryptogramma crispa subsp. acrostichoides (R. Brown) Hultén Cryptogramma crispa var. acrostichoides (R. Brown) C. B. Clarke
Treatment appears in FNA Volume 2.

Stems decumbent to erect, much branched from base, stout, 10–20 mm diam. (including hardened, persistent leaf-bases); scales bicolored, dense, broadly lanceolate to linear, to 6 × 2 mm. Leaves densely tufted, green over winter, persistent after withering; sterile leaves spreading, 3–17 cm; fertile leaves erect, 5–25 cm; hairs small, appressed, cylindric, scattered along grooves of petiole and along costae and costules of adaxial blade surface. Petiole green to straw-colored, dark-brown on proximal 1/8 or less, 1–2 mm wide, firm and strawlike, not collapsed; scales bicolored or ± concolored, becoming sparse distally. Blade deltate to ovatelanceolate, all 2–3-pinnate, somewhat leathery, opaque; hydathodes sunken below leaf surface. Segments of sterile leaves oblong to ovatelanceolate, bases cuneate, distal 2/3–1/2 of segments crenate to dentate, often somewhat more deeply incised every 2d tooth; segments of fertile leaves horizontal to ascending, strongly differentiated from those of sterile leaves, linear, 3–12 × 1–2 mm; margins of fertile segments revolute, covering sporangia. Sporangia in sori that coalesce at maturity. 2n = 60.


Habitat: New growth produced in spring, spores maturing in summer, sterile leaves green over winter, senescing 2d spring. Noncalcareous cliff crevices, rock outcrops, and talus, often in relatively dry habitats, typically montane but occurring in lowland to alpine habitats
Elevation: 0–3700 m

Distribution

V2 373-distribution-map.gif

Alta., B.C., Man., N.W.T., Ont., Sask., Yukon, Alaska, Ariz., Calif., Colo., Idaho, Mich., Mont., Minn., Nev., N.Mex., Oreg., Utah, Wash., Wyo., reported from Mexico in Baja California, Asia

Discussion

Cryptogramma acrostichoides has often been treated as a variety or subspecies of the strictly European Cryptogramma crispa (Linneaus) R. Brown, which has a chromosome number of 2n = 120.

Selected References

None.

Lower Taxa

None.

"broad" is not a number.

Edward R. Alverson +
R. Brown in Franklin +
incised +  and cuneate +
pubescent +  and glabrous +
lustrous +  and dull to somewhat +
deltate +  and ovatelanceolate +
American parsley fern +
Alta. +, B.C. +, Man. +, N.W.T. +, Ont. +, Sask. +, Yukon +, Alaska +, Ariz. +, Calif. +, Colo. +, Idaho +, Mich. +, Mont. +, Minn. +, Nev. +, N.Mex. +, Oreg. +, Utah +, Wash. +, Wyo. +, reported from Mexico in Baja California +  and Asia +
0–3700 m +
yellow +  and white +
obcordate;reniform +
New growth produced in spring, spores matuNew growth produced in spring, spores maturing in summer, sterile leaves green over winter, senescing 2d spring. Noncalcareous cliff crevices, rock outcrops, and talus, often in relatively dry habitats, typically montane but occurring in lowland to alpine habitatsut occurring in lowland to alpine habitats +
cylindric +
monomorphic +
tufted;scattered +
persistent +
recurved +  and reflexed +
sterile +  and fertile +
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
noncircinate +  and circinate +
5 cm50 mm <br />0.05 m <br /> (25 cm250 mm <br />0.25 m <br />) +
dentate or +  and shallowly deeply cut +
dark-brown;green;straw-colored +
1mm +  and 2mm +
in Franklin,Narr. Journey Polar Sea +
concolored;bicolored;bicolored +
persistent +
0 cm0 mm <br />0 m <br /> (?) +  and 0.6 cm6 mm <br />0.006 m <br /> (?) +
broadly lanceolate +  and linear +
0mm +  and 2mm +
differentiated +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Illustrated +
tetrahedral +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
decumbent +  and erect +
few +  and many +
Cryptogramma crispa subsp. acrostichoides +  and Cryptogramma crispa var. acrostichoides +
Cryptogramma acrostichoides +
Cryptogramma +
species +
adnate +  and free +
crescent--shaped +  and roundish +