Huperzia beiteliana Mickel
Descripción
Shoots erect, indeterminate, 12–45 cm tall, becoming longdecumbent, evergreen, with long-trailing senescent portions turning brown, juvenile and mature portions similar without strong annual constrictions; stems (without leaves) 2–3 mm diam.; juvenile buds erect; gemmiphores and gemmae produced mostly among the sporophylls in recent year’s growth (mostly in the distal 1⁄3 of the fertile zone), less frequently in the 1–8 mm breaks between fertile regions; gemmae 5–6 X 3–4 mm, lateral lobes broadly obtuse, 1.7 mm wide; leaves spreading to deflexed, dark green, lustrous, firm but not coriaceous, all more or less linear, 5–7 X 1.3–1.6 mm with entire margins, stomates on both abaxial and adaxial surfaces; spores 31–42 µm diam. (avg. 37).A
Forma de vida
TerrestreA
Ejemplar revisado
SLP (Schaffner s.n., Aug 1879, NY). Oax (Taylor 2442, DUKE, ENCB).A
Distribución
México (país) EndémicoA
Elevación
2575 – 2700 mA
Ecología y Hábitat
On wet rocky banks.A
Tipo de vegetación
Bosque de pino-encinoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
The specimen from San Luis Potosí (Schaffner s.n., NY, Aug 1879, near Santa María del Río) was labelled as “Lycopodium selago var. recurvatum mihi” [Schaffner], but that name was apparently never published.
Huperzia beiteliana closely resembles H. selago (L.) Bernh. Of northern North America and Eurasia in the general characters of leaves, gemmae, and spores, but is distinct in the much greater plant size (H. selago generally less than 15 cm tall), lack of annual constrictions, gemmiphores and gemmae located mostly among the sporophylls (not restricted to a pseudowhorl between the fertile zones), gemmae 5–6 mm long (vs. 4–5 mm), and spores 31–42 (avg. 37 µm diam.) vs. 29–37 (avg. 31 µm). Huperzia beiteliana occurs nearly 3000 km from the nearest populations of H. selago.
A
Huperzia beiteliana closely resembles H. selago (L.) Bernh. Of northern North America and Eurasia in the general characters of leaves, gemmae, and spores, but is distinct in the much greater plant size (H. selago generally less than 15 cm tall), lack of annual constrictions, gemmiphores and gemmae located mostly among the sporophylls (not restricted to a pseudowhorl between the fertile zones), gemmae 5–6 mm long (vs. 4–5 mm), and spores 31–42 (avg. 37 µm diam.) vs. 29–37 (avg. 31 µm). Huperzia beiteliana occurs nearly 3000 km from the nearest populations of H. selago.
A