Compilation
Pteris atrovirens

38 Images see all

Previous
Next

Name

Identification
Pteris acanthoneura Alston [family PTERIDACEAE ] (stored under name); Verified by Alston,A.H.G., Pteris atrovirens Willd. [family PTERIDACEAE ]
Related name
  • Pteris usambarensis
  • Pteris remota
  • `
  • Pteris spinulosa
  • Pteris laevicosta
  • Pteris atrovirens
  • Pteris hamulosa
  • Pteris acanthoneura
  • Pteris mkomaziensis
  • Pteris spinulifera
Common name
  • (Chiehn) gaholobé (K&B) tièragbauétiti (B&D) tieragbawè (B&D) (IVORY COAST, GUERE), Burkill, H.M. 1985. The useful plants of west tropical Africa, Vol. 5
  • butrègna (B&D) (IVORY COAST, BAULE), Burkill, H.M. 1985. The useful plants of west tropical Africa, Vol. 5
  • koli kolia (GFSE) (SIERRA LEONE, SUSU), Burkill, H.M. 1985. The useful plants of west tropical Africa, Vol. 5
  • gagiwon (K&B) (IVORY COAST, KRU-GUERE), Burkill, H.M. 1985. The useful plants of west tropical Africa, Vol. 5
  • malakay (B&D) (IVORY COAST, AKAN-ASANTE), Burkill, H.M. 1985. The useful plants of west tropical Africa, Vol. 5
  • du odegbidegbifè (B&D) duébubéfuè (B&D) tiéré (IVORY COAST, KWENI), Burkill, H.M. 1985. The useful plants of west tropical Africa, Vol. 5

Flora

Entry for PTERIS burtonii Bak. [family ]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical East Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical East Africa, page 1, (2002) Author: BERNARD VERDCOURT
Names
PTERIS burtonii Bak. [family ], in Ann. Bot. 5: 218 (1891), as burtoni; Tardieu, Mém. I.F.A.N. 28: 72, t. 10, figs. 6, 7 (1953); Alston, Ferns W.T.A.: 42, fig. 10 (1959); Tardieu, Fl. Cameroun 3: 158 (1964) & Fl. Gabon 8: 10, t. 18, figs. 1–4 (1964); Schelpe in Contr. Bol. Herb. 1: 60 (1969) & C.F.A. Pterid.: 92 (1977). Type: Ghana, Burton s.n. (K!, holo.)
PTERIS johnstonii Bak. [family ], in Ann. Bot. 5: 218 (1891), as johnstoni . Type: Sierra Leone, Wilberforce, Johnston s.n. (K!, holo.)
PTERIS aethiopica Christ [family ], in Journ. de Bot. sér. 2, 2: 21 (1909). Types: Ivory Coast, between Abidjan and Makongguie, Chevalier 15608 & Bouroukrou, Chevalier 16752 (P, syn.)
PTERIS atrovirens Bonap. var. cervonii [family ], in Bull. Mus. Hist. Nat. 19: 388 (1913), nomen
PTERIS burtonii (Christ) Tardieu var. aethiopica [family ], in Mém. I.F.A.N. 28: 72, fig. 8 (1953)
Information
Rhizome erect or ascending with lanceolate to linear-lanceolate scales 3–4 mm long, narrowly dark in the middle with pale edges. Fronds (1–)few, tufted, 0.3–1 m tall. Stipe 10–38 cm long with scales near base. Lamina triangular, 20–40 cm long, 15–40 cm wide with a gemma near the base of the terminal pinna. Pinnae in 1–5 pairs, typically (but apparently not in E Africa) the pinnae simple, (6–19 cm long, 1.4–4 cm wide), entire or with a few coarse lobes and basal pair with a basiscopic spur; more usually the pinnae are deeply pinnatifid and in W Africa simple and pinnatifid fronds often occur on the same plant with every intermediate; pinnae oblong-lanceolate, 13–22 cm long, 3–8 cm wide, the terminal segments narrowly triangular-lanceolate, 3–6(–9) cm long, ± 1 cm wide, crenulate at the apex; ultimate segments of pinnae in 10–15 pairs, oblong, 0.6–4.5 cm long, 5–11 mm wide, ± rounded and crenate-serrate at the apex, the basal basiscopic segment of lowest pinnae much longer, 7.4 cm long, 1.4 cm wide; costa of pinnae ± smooth on both sides save for very sparse roughening and a small patch of dense short emergences where base of pinna meets the rhachis; rhachis narrowly winged by decurrent pinna bases; veins in segments usually densely anastomosing. Sori often running along whole margin of pinna whether simple or deeply pinnatifid without a gap in sinuses and then up to 20 cm long, but tips of ultimate segments usually sterile and crenate and sori usually U-shaped and 2–5 cm long.
Range
DISTR. U 2, 4 West Africa from Guinea to Angola also Bioko, S. Tomé, Central African Republic, ?Congo (Kinshasa)
Altitude range
1400 m
Distribution
UGANDA Kigezi District Rukungiri, Bwindi National Park, northern sector (Kayonza), on slopes near the Ishasha R., 20 Mar. 1995, Poulsen et al. 805!;UGANDA Mengo District Kamengo Forest, Aug. 1949, H.D. van Someren 332! (see note)
Notes
Typical P. burtonii has simply pinnate sterile fronds with the pinnule entire or coarsely lobed, particularly the bottom pair, but many specimens are scarcely distinct from P. atrovirens which frequently can have costae non-spinulose. Most material named as P. burtonii in E Africa belongs to other species but the first specimen cited above is correctly named. The second probably is but lacks gemmae. Nevertheless the group of burtonii, atrovirens and similis needs much more study. Specimens with simple undivided pinnae have not been found in the Flora area so far as is known. Doubtful specimens can be referred to P. atrovirens ,by far the oldest name.

Related Materials