Skip Navigation
Sign In
  • Home
  • Search
    • Search Collections
    • Map Search
  • Chicago Botanic Garden
    • Project Information
    • Checklists
    • Create a Checklist
    • Dynamic Key
  • Denver Botanic Gardens
    • Project Information
    • Checklists
    • Create a Checklist
    • Dynamic Key
  • Desert Botanical Garden
    • Project Information
    • Checklists
    • Create a Checklist
    • Dynamic Key
  • NY Botanical Garden
    • Project Information
    • Checklists
    • Create a Checklist
    • Dynamic Key
  • Marie Selby Botanical Gardens
    • Project Information
    • Checklists
    • Create a Checklist
    • Dynamic Key
  • Sitemap

Homalosorus pycnocarpos

Homalosorus pycnocarpos (Spreng.) Pic.Serm.   (redirected from: Diplazium pycnocarpon (Spreng.) Broun)
Family: Athyriaceae
Glade Fern, more...Narrow-Leaved Spleenwort
[Athyrium angustifolium, moreDiplazium pycnocarpon (Spreng.) Broun]
Homalosorus pycnocarpos image
Paul Rothrock
  • FNA
  • vPlants
  • Indiana Flora
  • Resources
Masahiro Kato in Flora of North America (vol. 2)
Stems creeping; scales brown, broadly lanceolate, margins entire. Petiole 15--40(--50) cm. Blade oblong-lanceolate, 1-pinnate, 30--75 × 8--25 cm, ± narrowed to base with reduced proximal pinnae, broadest above base, abruptly acuminate to apex. Pinnae linear, ± entire to shallowly crenulate, base truncate or acroscopically auriculate, apex acuminate. Veins usually 1--2-forked, nearly reaching sinuses between crenations. Sori elongate, straight or slightly falcate, single or rarely double; indusia vaulted, ± thick. 2 n = 80.

Moist woods and slopes in neutral soil; 150--1000 m; Ont., Que.; Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Md., Mass., Mich., Minn., Miss., Mo., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Vt., Va., W.Va., Wis.

Diplazium pycnocarpon has commonly been placed in Athyrium , but it is closely related to the east Malesian Diplazium flavoviride Alston (M. Kato and D. Darnaedi 1988).

The Morton Arboretum
Perennial fern 45 cm - 1.2 m tall Leaves: scattered, erect, evergreen (remain green even in winter), 30 - 75 cm long, 8 - 25 cm wide, oblong-lance-shaped in outline (widest just above base, tip abruptly long-pointed), but pinnately compound, herbaceous to papery, and mostly hairless except few multicellular hairs on "midrib" (rachis) and main veins. Rhizome: creeping, covered with brown, broadly lance-shaped scales. Leaf stalks: scattered along rhizome, erect, swollen at base, 15 - 50 cm long, with usually persistent scales at stalk base. Spores: 64 per sac, brownish, all of one kind, single-sectioned (monolete), oblong or kidney-shaped, and usually with a broad wing. The spores give rise to the gametophyte (the sexual phase of the plant), which is small, green, heart-shaped, hairless or often with glands or hairs, and sits above the ground.

Similar species: Diplazium pycnocarpon is probably most similar in appearance to Polystichum acrostichoides, but that species has leaf divisions (pinnae) with obvious ear-shaped lobes at the upper edge of their bases, the pinnae edges have spine-tipped teeth, the pinnae veins rarely fork more than once, and the round sori completely cover the entire lower surface of the pinnae. Some could confuse this species with robust plants of Asplenium platyneuron, but that species has shiny, very dark brown or purplish leaf stalks and "midribs" (rachis), usually shorter pinnae, and the base of the pinnae overlap the rachis.

Habitat and ecology: Rare, in undisturbed mesic woods, especially in Berrien County, Michigan.

Occurence in the Chicago region: native

Notes: This species has commonly been included in the genus Athyrium (as A. pycnocarpon), but research shows it is closely related to the east Malesian species Diplazium flavoviride (Kato 1993).

Author: The Field Museum

From Flora of Indiana (1940) by Charles C. Deam
Infrequent to frequent in southern Indiana, becoming less frequent to rare northward. It prefers deep humus and is most commonly found on the slopes of ravines in beech woods.

......

Indiana Coefficient of Conservatism: C = 9

Wetland Indicator Status: FACU

Homalosorus pycnocarpos
Open Interactive Map
Homalosorus pycnocarpos image
Nathanael Pilla
Homalosorus pycnocarpos image
Paul Rothrock
Homalosorus pycnocarpos image
Scott Namestnik
Homalosorus pycnocarpos image
Scott Namestnik
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Homalosorus pycnocarpos image
Click to Display
100 Initial Media
- - - - -
View All Media
Institute for Museum and Library Services KU BI Logo Logo for the Biodiversity Knowledge Integration Center

This project was made possible in part by the Institute of Museum and Library Services [MG-70-19-0057-19].

EcoFlora is part of the SEINet Portal Network. Learn more here.

Powered by Symbiota.