Grammitis hartii (Jenman) Proctor

  • Authority

    Proctor, George R. 1989. Ferns of Puerto Rico and the Virgin Islands. Mem. New York Bot. Gard. 53: 1-389.

  • Family

    Polypodiaceae

  • Scientific Name

    Grammitis hartii (Jenman) Proctor

  • Description

    Species Description - Rhizome short, erect, at apex bearing dark brown, clathrate, lance-linear to oblong-lanceolate scales 1-3 mm long, 0.2-0.5 mm broad, glabrous and entire. Fronds 5-16 cm long, shortstipitate; stipes 0.5-2 cm long, pubemlous with minute articulate hairs in clusters from whitish glandular surface outgrowths; similar hairs at first on abaxial side of rhachis, soon deciduous. Blades linear, 2.5-5 mm broad, deeply pinnatifid, narrowed to a subacuminate apex, very gradually tapering at base; segments narrowly deltate to narrowly oblong, oblique-spreading, close, 1-1.5 mm broad, obtuse or acutish at apex, somewhat convex on adaxial side; costae unbranched, not reaching segment apex, each terminating in a small hydathode. Sori elliptic, impressed (fertile segments concave abaxially), borne toward base of the strongly arcuate fertile costa, the sorus impinging on the rhachis; sporangia glabrous.

  • Discussion

    Basionym. Polypodium hartii Jenman, J. Bot. 24: 272. 1886.

    Type. J. H. Hart, s.n., from Jamaica (K).

    Syn. Xiphopteris hartii (Jenman) Copeland, Amer. Fern L42:93. 1952.

  • Distribution

    General Distribution. Jamaica, Puerto Rico, and the Lesser Antilles.

    Jamaica South America| Puerto Rico South America| West Indies|