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Pityrogramma

Pityrogramma
Family: Pteridaceae
Pityrogramma image
  • FNA
  • Resources
George Yatskievych
Michael D. Windham in Flora of North America (vol. 2)
Plants terrestrial [or on rock]. Stems erect or nearly so, unbranched; scales brown, concolored or nearly so, lanceolate, margins entire. Leaves monomorphic, closely spaced, 25--150 cm. Petiole black to purplish black or reddish brown, longitudinally grooved adaxially, glabrous, with 2(--3) vascular bundles. Blade linear-lanceolate to ovate or elongate-triangular, 1--4-pinnate, herbaceous to leathery, abaxially usually farinose, farina white or yellow, sometimes partially or completely replaced by trichomes, adaxially glabrous, dull, not striate; rachis straight. Ultimate segments stalked or sessile, free from costa or partially adnate to it, narrowly triangular to linear, entire or lobed; base narrowly cuneate, stalks when present green, not lustrous; margins not recurved to form false indusia. Veins of ultimate segments free, obscure, pinnately branched and divergent distally. False indusia absent. Sporangia scattered along veins, containing 32 or 64 spores, intermixed with farina-producing glands. Spores tan with dark brown ridges, tetrahedral-globose, perispore usually reticulate, with equatorial flange (except in Pityrogramma trifoliata ). Gametophytes glabrous.

The name Nesoris bicolor Rafinesque was based on a yellow-farinose plant from Florida and presumably represents a species of Pityrogramma . A type has not been located, and C. S. Rafinesque's (1836[--1838]b, part 4) description is not precise enough to permit equation of this name with modern nomenclature. No yellow-farinose Pityrogramma has since been reported from Florida.

Pentagramma has been segregated from Pityrogramma (G. Yatskievych et al. 1990) and comprises what was the Pityrogramma triangularis (Kaulfuss) Maxon complex.

Species within inventory project: Arizona Flora
Pityrogramma argentea
Media resource of Pityrogramma argentea
Map not
Available
Pityrogramma auriantica
Media
not available
Map not
Available
Pityrogramma austroamericana
Media resource of Pityrogramma austroamericana
Map not
Available
Pityrogramma calomelanos
Media resource of Pityrogramma calomelanos
Map not
Available
Pityrogramma chrysoconia
Media resource of Pityrogramma chrysoconia
Map not
Available
Pityrogramma chrysophylla
Media resource of Pityrogramma chrysophylla
Map not
Available
Pityrogramma dealbata
Media resource of Pityrogramma dealbata
Map not
Available
Pityrogramma ebenea
Media resource of Pityrogramma ebenea
Map not
Available
Pityrogramma euchrysa
Media resource of Pityrogramma euchrysa
Map not
Available
Pityrogramma ferruginea
Media resource of Pityrogramma ferruginea
Map not
Available
Pityrogramma humbertii
Media
not available
Map not
Available
Pityrogramma hybrida
Media resource of Pityrogramma hybrida
Map not
Available
Pityrogramma lehmannii
Media resource of Pityrogramma lehmannii
Map not
Available
Pityrogramma ochracea
Media resource of Pityrogramma ochracea
Map not
Available
Pityrogramma pallida
Media resource of Pityrogramma pallida
Map not
Available
Pityrogramma peruviana
Media resource of Pityrogramma peruviana
Map not
Available
Pityrogramma pulchella
Media resource of Pityrogramma pulchella
Map not
Available
Pityrogramma rupicola
Media
not available
Map not
Available
Pityrogramma schaffneri
Media resource of Pityrogramma schaffneri
Map not
Available
Pityrogramma schizophylla
Media resource of Pityrogramma schizophylla
Map not
Available
Pityrogramma semipallida
Media resource of Pityrogramma semipallida
Map not
Available
Pityrogramma subflexuosa
Media
not available
Map not
Available
Pityrogramma sulphurea
Media resource of Pityrogramma sulphurea
Map not
Available
Pityrogramma triangulata
Media resource of Pityrogramma triangulata
Map not
Available
Pityrogramma trifoliata
Media resource of Pityrogramma trifoliata
Map not
Available
Pityrogramma williamsii
Media resource of Pityrogramma williamsii
Map not
Available
Pityrogramma x mackenneyi
Media
not available
Map not
Available
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This project was made possible in part by the Institute of Museum and Library Services [MG-70-19-0057-19].

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