Bolbitis - Lomariopsidaceae

Bolbitis acrostichoides (Afzel. ex Sw.) Ching

Photo: BT. Wursten
Dem. Republic of Congo

Photo: BT. Wursten
Dem. Republic of Congo

Photo: BT. Wursten
Dem. Republic of Congo

Photo: BT. Wursten
Dem. Republic of Congo

 

 

 

 

Synonyms

Hemionitis acrostichoides Afzel. ex Sw.
Polybotrya acrostichoides (Afzel. ex Sw.) Mett. ex Kuhn
Leptochilus acrostichoides (Afzel. ex Sw.) C.Chr.
Campium acrostichoides (Afzel. ex Sw.) Copel.
Leptochilus diversibasis Bonap.

Common name

Description

Rhizome short-creeping, to 10 mm diameter; rhizome scales dense, opaque to subclathrate, lanceolate in outline, 6–8 x 1–1.5 mm. Fronds ± 30–110 cm long. Stipe 1/4–1/2 the frond length, straw coloured to brown, scaly especially proximally with small appressed orange-tan reduced scales distally on rhachis and costa. Sterile fronds 20–80 x 10–35 cm, terminal segment 7–45 x 2.2–2.4 cm, longer than lateral pinnae, with subterminal buds, these occasionally missing; lateral pinnae (3–)9–13 pairs, 12–20 x 2–3.2 cm, lower pinnae short-stalked, stalk 1–10 mm long, lamina narrowly oblong-acuminate in outline, base symmetrically broadly wedge-shaped or rounded, apex tapering to a point; margin entire to finely serrate to ± crenate, rarely strongly toothed; lower surface with scattered minute l-celled hairs. Fertile fronds often slightly exceeding the sterile in length, 50–150 cm long; stipe ± 3/4 the frond length; pinnae 3–13 pairs, much smaller than the sterile, (3–)8–13 cm x (0.4–)0.8–1 cm, lowest pinnae stalked, stalk 1–20 mm long; subterminal bud rarely present on terminal pinnae; veins netted, without included free veinlets, impressed adaxially. Sori gymnogrammoid, rarely acrostichoid.

Notes

Bolbitis acrostichoides is distinct by the prolonged terminal pinna bearing a subapical bud.

Derivation

Habitat

Moist forest and swamp forest.

Distribution worldwide

See African distribution.

Distribution in Africa

Angola, Cameroon, Central African Republic, Congo, Dem. Republic of Congo, Equatorial Guinea (incl. Bioko), Gabon, Ghana, Guinea, Guinea Bissau, Ivory Coast, Liberia, Nigeria, Senegal, Sierra Leone, Sudan and South Sudan, Tanzania , Togo, Uganda.

Growth form

Terrestrial.

Literature

  • Mickel, J.T. (2002) Lomariopsidaceae. Flora of Tropical East Africa, Pages 2 - 4. (Includes a picture).
  • Roux, J.P. (2009) Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands. Strelitzia 23, South African National Biodiversity Institute, Pretoria. Pages 113 - 114.
  • Tardieu-Blot, M.-L. (1964) Ptéridophytes vol.3. Flore du Cameroun, Pages 322 - 323. (Includes a picture).
  • Thardieu-Blot, M.L. (1964) Ptéridophytes vol.8. Flore du Gabon, Page 190.
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