Urostachys aqualupianus (Spring) Herter, Repert., 2020

Øllgaard, Benjamin, Boudrie, Michel & Cremers, Georges, 2020, The Lycopodiaceae of Guyana, Suriname, and French Guiana, Phytotaxa 433 (2), pp. 101-134 : 114

2. Phlegmariurus aqualupianus (Spring) B.Øllg., Rodriguésia 63(2): 480. 2012. — Lycopodium aqualupianum Spring, Bull. Acad. Roy. Sci. Belg. 8: 518. 1841.— Lycopodium guadalupianum Fée, Hist. Foug. Ant. 131, t. 33, 1. 1866 nom. superfl.— Urostachys aqualupianus (Spring) Herter, Repert. Spec. Nov. Regni Veg. 19: 166. 1923.— Huperzia aqualupiana (Spring) Rothm., Feddes Repert. 54: 62. 1944. Lectotype:— GUADELOUPE: L’Herminier s.n., (lectotype LG!, designated by Badré 1983: 4; isolectotype BM!). Fig. 7A .

Plants pendulous, flaccid, 3–4 times dichotomous. Stems stramineous, angular, 15–50 cm long, thin, usually less than 1 mm thick excl. leaves. Shoots heterophyllous, the proximal divisions with wide expanded leaves, the distal divisions abruptly narrowed, with small imbricate leaves. Proximal expanded divisions with uniform leaves, 10–17 mm wide incl. the leaves, sometimes slightly tapering distally, usually continuously overlapping. Expanded leaves decussate or in whorls of 3, forming 4–6 longitudinal rows, regularly inserted, ascending to patent, softy herbaceous, ellipticoblong, 6–11 × 2.8–4 mm, entire, slightly apiculate, with decurrent base. Constricted divisions quadrangular, with extensive non-sporangiate zones proximally. Leaves of constricted divisions imbricate, regularly decussate, ovate, carinate, 3–4.5 × 1.5 mm. Sporangia ca. 1 mm wide, completely concealed by sporophyll bases.

Distribution:—Greater Antilles (except Jamaica), Colombia, Venezuela, Guyana, Brazil.

Habitat:—Epiphytic in wet premontane and cloud forest, 500–1800 m elev.

Specimens examined:— GUYANA: Potaro R., beyond Kaieteur Falls, Jenman s.n. (E); Roraima, Appun 1388 (K); Sheenaboowa, Potaro R., Jenman 1476 (K).

Figures

FIGURE 7.A. Phlegmariurus aqualupianus—(Brazil, Salino et al. 9192, BHCB), growth habit. B. Phlegmariurus myrsinites (Venezuela, Meier & Silva 1585, AAU), growth habit.