Phlegmariurus tenuicaulis (Underw. & F.E.Lloyd) B.Øllg., Phytotaxa

Boudrie, Michel, Cremers, Georges & Øllgaard, Benjamin, 2023, Lycopodiaceae of the Guianas: List of exsiccata and distribution maps, Phytotaxa 601 (2), pp. 103-136 : 122-123

4.14. Phlegmariurus tenuicaulis (Underw. & F.E.Lloyd) B.Øllg., Phytotaxa 57: 19. 2012.— Fig. 1 .

Lycopodium tenuicaule Underw. & F.E.Lloyd, Bull. Torrey Bot. Club 33: 113. 1906.— Urostachys tenuicaulis (Underw. & F.E.Lloyd) Herter, Repert. Spec. Nov. Regni Veg. 19: 165. 1923.— Huperzia tenuicaulis (Underw. & F.E.Lloyd) B.Øllg., Opera Bot. 92: 169. 1987. Type:— DOMINICA. Mt. Diablotin, 1903, Lloyd 878 (holotype NY! [144031]; isotype US-fragm.! [00135542]).

Lycopodium linifolium L. var. gracile L’Herm. ex Fée, Mém. Foug. 11: 129. 1866. Type : GUADELOUPE. Sources de la rivière Saint-Louis, Feb. 1845, L’Herminier s.n. (holotype P! [ P00559125 ]; poss. isotypes P! [ P00559126 ], [ P00559127 ], [ P00559128 ], [ P00559130 ], NY! [1754003]).

A lax, slender pendulous epiphyte with delicate scattered leaves, the stems usually 20–30 cm long, loosely 2 to 4 times dichotomous. Stems smooth, often reddish, 0.3-0.7 mm thick excl. leaves, shoots 1–1.8 cm wide incl. leaves. Leaves paired to alternate, 1–2 mm apart, spreading to patent, the lamina usually twisted to a vertical position, narrowly elliptic to oblanceolate, slightly asymmetrical to subfalcate, with acute apex, 6–9 × 1–1.5 mm, the margins entire, midrib slender, long-decurrent. Sporangia 1–3 mm wide.

Distribution: Greater Antilles ( Cuba, Jamaica, Haiti, Dominican Republic, Puerto Rico), Lesser Antilles ( Guadeloupe, Dominica, Martinique), where it grows at high elevations, around 1000 m ( Proctor, 1989). This is the first record for continental South America.

Habitats: Montane forests, 460–1600 m elev.

Note: This species was overlooked in our previous article ( Øllgaard et al., 2020) because the Pipoly specimen had not been found at that time.

Collection studied from the Guianas: 1 (GU: 1)

Guyana: Cuyuni-Mazaruni Region, at headwaters of Kangu R ., W branch, ± 4 km NW of E peak of Mt. Ayanganna, 700 m, 5 Mar 1987, Pipoly et al. 11042 ( FDG not found, NY [3835301!], US [00648152!]) .

Figures

FIGURE 1. Phlegmariurus tenuicaulis—(Guyana, Pipoly et al. 11042, US): growth habit.