Compilation
Lycopodiella cernua

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Name

Identification
Lycopodiella cernua (L.) Pic.Serm. [family PTERIDOPHYTA ]
Related name
  • Lycopodiella cernua

Flora

Entry for Lycopodiella cernua (L.) Pic.Serm. [family LYCOPODIACEAE]
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, (2005) Author: B. Verdcourt, B.Sc., Ph.D.
Names
Lycopodiella cernua (L.) Pic.Serm. [family LYCOPODIACEAE], in Webbia 23: 166 (1968); Tardieu, Fl. Madag. 13 & 13 bis: 8, fig. 1/9–13 (1971); Pic. Serm. in B.J.B.B. 53: 187 (1983); Schippers in Fern Gaz. 14: 174 (1993); Faden in U.K.W.F. ed. 2: 38 (1994). Type: India or E Indies; collector and locality not known, Linnean Herb. 1257.13 (LINN, lecto.)
Lycopodium cernuum L. [family LYCOPODIACEAE], Sp. Pl.: 1103 (1753); Hieron. in P.O.A. C: 91 (1895) & in V.E. 2: 75, fig. 74 (1908); Sim, Ferns S. Afr., ed. 2: 327, t. 179 (1915); F.D.-O.A.: 89 (1929); Chr. in Dansk Bot. Arkiv 7: 192 (1932); Alston in Exell, Cat. Vasc. Pl. São Tomé: 95 (1944) & in Mém. I.F.A.N. 50: 24 (1957) & Ferns W.T.A.: 12 (1959); Tardieu, Fl. Cameroun 3: 16 (1964) & Fl. Gabon 8: 10 (1964); Schelpe, F.Z. Pterid.: 20 (1970) & Expl. Hydrobiol. Bassin L. Bangweolo & Luapula 8 (3); Ptérid.: 12 (1973) & C.F.A. Pterid.: 19 (1977); Schelpe & Diniz, Fl. Moçambique, Pterid.: 14 (1979); Jacobsen, Ferns S. Afr.: 138, fig. 80 (1983); Schelpe & N.C. Anthony, F.S.A., Pterid.: 11, fig. 4/1 (1986); Burrows, S. Afr. Ferns: 18, t. 2/1, fig. 4/7 (1990)
Information
Terrestrial with long creeping or looping main stems (stolons) up to 1.8 (–5 in other areas) m long, bearing erect or less often procumbent stems at intervals 0.35–1(–2) m long; roots short, up to 10 mm long. Erect stems much branched in Christmas tree-like fashion, densely leafy. Leaves subulate, 1.5–5 mm long, 0.2–0.3(–1) mm wide, spreading, curved forwards. Strobili solitary at ends of leafy branchlets, 4–15 mm long, 2 mm wide, sessile. Sporophylls pale yellowish, broadly ovate-acuminate, 1.8 mm long, 1.2 mm wide with lacerate-ciliate margins. Fig. 3 (page 15).
Range
DISTR. U 2–4; K 3, 4, 6, 7; T 1–4, 6–8; Z, P practically cosmopolitan
Altitude range
0–2700 m (summit of Longonot)
Distribution
KENYA Naivasha District S of Lake Naivasha, Hell’s Gate Gorge [Njorowa], 14 Dec. 1952, Greenway & Verdcourt 8764!KENYA S Nyeri District 11 km from Embu on Embu–Sagana road, 12 Apr. 1969, Faden et al. 69/492!;KENYA Teita District Mbololo Forest, 13 May 1985, Faden et al. 416!TANZANIA Lushoto District E Usambaras, Sangerawe, 24 Oct. 1929, Greenway 1781!;TANZANIA Rufiji District Mafia I., Ras Mbisi, 1 Oct. 1937, Greenway 5352!;TANZANIA Rungwe District Rungwe Mt, 23 Oct. 1956, Richards 6753!TANZANIA Zanzibar Mazingini, 23 Feb. 1930, Vaughan 1260!UGANDA Ankole District Rugongo, Nyagoma R., 9 Jan. 1971, Rwaburindore 534!;UGANDA Mbale District Bugisu, near Bukalasi, 18 Nov. 1968, Lye 577!;UGANDA Masaka District Sese Is., Bugala, 3 June 1932, A.S. Thomas 42!
Notes
Schelpe (F.Z.) lists much synonymy not relevant to our area. Proctor (Ferns Jamaica: 29 (1985)) divides the species into var. cernuum and var. curvatum (Sw.) Hook & Grev., the latter having denticulate ciliate leaves. Lycopodium curvatum Sw. had often been treated as a separate species. Specimens from other parts of the world sometimes have hair-like cuticular projections and a few can be found in some East African specimens. Other varieties have been recognised but whatever the result of the future studies of the variation of this species throughout the world which are much needed African material will remain referable to the typical variety.

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