Family: Dryopteridaceae
Belly-Button Vein Fern
[Cyrtomium umbonatum (Underw.) Morton]
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Leaves 30--90 cm. Pinnae 10--18 pairs, lanceolate, usually falcate, 5--15 cm, base cuneate to ± truncate, apex attenuate; acroscopic lobe absent. Indusia scarious, convex with darker, raised umbo centrally, persistent and not shriveled at maturity. 2n = 82.
Moist, sheltered canyons and ravines; 1800--1900 m; Tex.; n Mexico.
In the flora Phanerophlebia umbonata is known only from the Chisos Mountains, in Brewster County, Texas.
Common Name: bellybutton veinfern
Rarity: G3 (G4)
Etymology: Phanerophlebia comes from the Greek phaneros for evident, and phlebos for vein,
Synonyms: Cyrtomium umbonatum