1. Family: Poaceae Barnhart
    1. Genus: Oldeania Stapleton
      1. Oldeania alpina (K.Schum.) Stapleton

        This species is accepted, and its native range is Ethiopia to Zambia.

    [GB]
    Habit
    Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 200-1950 cm long; 50-125 mm diam.; woody. Culm-internodes terete; thick-walled; mid-green. Lateral branches dendroid. Branch complement three, or several; in an irregular line; with subequal branches. Culm-sheaths glabrous, or hispid; with red hairs; auriculate; setose on shoulders. Culm-sheath blade linear; acute. Leaf-sheath oral hairs setose. Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades deciduous at the ligule; lanceolate; 5-20 cm long; 6-15 mm wide. Leaf-blade venation with distinct cross veins. Leaf-blade surface glabrous. Leaf-blade apex attenuate; filiform.
    Inflorescences
    Inflorescence a panicle. Panicle open; elliptic; dense, or loose; 5-15 cm long. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 1-3 mm long; glabrous.
    Spikelets
    Spikelets comprising 5-10 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 15-40 mm long; 3-4 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes eventually visible between lemmas. Floret callus pubescent.
    Fertile
    Spikelets comprising 5-10 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 15-40 mm long; 3-4 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes eventually visible between lemmas. Floret callus pubescent.
    Glume
    Glumes persistent; similar; shorter than spikelet; similar to fertile lemma in texture. Lower glume ovate; 4-8 mm long; 0.8 length of upper glume; herbaceous; without keels; 5-9 -veined. Lower glume apex acuminate. Upper glume elliptic; 4-8 mm long; 0.75 length of adjacent fertile lemma; herbaceous; without keels; 5-9 -veined. Upper glume apex acuminate.
    Florets
    Fertile lemma ovate; 7-10 mm long; herbaceous; without keel; 7-9 -veined. Lemma lateral veins with cross-veins. Lemma surface glabrous, or puberulous. Lemma apex acute. Palea 1 length of lemma; 2 -veined. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 3; obovate; membranous; ciliate. Anthers 3. Stigmas 2, or 3 (rarely). Ovary glabrous.
    Fruits
    Caryopsis with adherent pericarp; fusiform; apex unappendaged. Embryo 0.2 length of caryopsis. Hilum linear.
    Distribution
    Africa: west-central tropical, northeast tropical, east tropical, and southern tropical.
    Reference
    Bambuseae. FTEA.
    [FTEA]

    Gramineae, W. D. Clayton, S. M. Phillips & S. A. Renvoize. Flora of Tropical East Africa. 1974

    Habit
    A gregarious bamboo with stout woody rhizomes.
    Culms
    Culms 2–19.5 m. high and 5–12.5 cm. in diameter, erect, evenly spaced, green, becoming yellow or brown, downy when young, thick-walled, with several branches from each of the upper nodes; culm-sheaths clothed with reddish-brown bristly hairs or glabrescent, tipped with a linear acute blade and fimbriate lateral auricles.
    Leaves
    Leaf-blades linear-lanceolate or narrowly lanceolate, 5–20 cm. long and 6–15 mm. wide, glabrous, with conspicuous transverse veins, narrowed to a fine bristle up to 2 cm. long, rarely only pungent; leaf-sheaths with small deciduous auricles bearing long smooth setae.
    Inflorescences
    Panicles terminal on the branches and branchlets, 5–15 cm. long, loose to compact; lateral pedicels 1–3 mm. long, the terminal much longer.
    Spikelets
    Spikelets 1.5–4 cm. long and 3–4 mm. wide, 5–10-flowered; glumes 4–8 mm. long, 5–9-nerved; lemmas ovate, mostly 7–10 mm. long, 7–9-nerved, minutely hairy or glabrescent, acute; palea about as long; lodicules ciliate; stigmas 2, rarely 3.
    Figures
    Fig. 2, p. 10.
    Habitat
    Dominating dense thickets and forests on the slopes of many East African mountains, from 2400–3000 m., with irregular patches or isolated plants in mixed forest down to 1860 m.Some of the largest areas are on the Aberdare Range (250 sq. miles [65,000 hectares]), Mau Range (200 sq. miles [51,000 hectares]) and Mt. Kenya (150 sq. miles [39,000 hectares]). It flourishes best on deep volcanic soils rich in humus, and is usually poorly developed or absent where rocks are near the surface.
    Distribution
    K1 K3 K4 K5 K6 T2 T4 T6 T7 U2 U3 sterile specimens resembling A. alpina have also been collected in Malawi
    [FWTA]

    Gramineae, W. D. Clayton. Flora of West Tropical Africa 3:2. 1972

    Habit
    Culms up to about 6 m. high and 3–5 cm. diam., hollow with thick walls
    Note
    Flowers infrequently
    Ecology
    Occurs in gregarious patches.
    [FZ]

    Gramineae, E. Launert. Flora Zambesiaca 10:1. 1971

    Habit
    A fruticose or arborescent gregarious bamboo with stout creeping woody rhizomes.
    Culms
    Culms 2–almost 20 m. tall, 5-12·5 cm. in diam., many-noded, hollow, erect, strict, evenly spaced, green at first later yellow and brown, downy when young later glabrous, profusely branched with several branches from each of the upper nodes; culm-sheaths ovate, oblong or oblong-lanceolate, covered with reddish or reddish-brown stiff hairs, tipped with a linear acute lamina and fimbriate lateral auricles.
    Leaf sheaths
    Leaf-sheaths imbricate, appressed, usually glabrous and smooth, with small deciduous stiffly fimbriate auricles.
    Ligules
    Ligule c. 2 mm. long, firm, truncate.
    Leaf lamina
    Leaf-lamina 5-20 x 0·6-1·5 cm., linear-lanceolate to narrowly lanceolate, with the apex acute or somewhat drawn out into a short bristle, base abruptly constricted into a short pseudo-petiole, glaucous to bright green, glabrous, conspicuously tessellate.
    Inflorescences
    Panicle (not known from specimens in F.Z. area) terminating the branches and branchlets, 5-15 cm. long, variable, open or condensed; lateral pedicels 1-3 cm. long, the terminal ones much longer.
    Spikelets
    Spikelets 1·5-4 x 0·3-0·4 cm., 5-10-flowered.
    Glume
    Glumes (5)7-9-nerved, lanceolate or narrowly ovate, apex acute, chartaceous; the inferior 4-8 mm. long; the superior 5-8 mm. long.
    Lemma
    Lemmas mostly 7-10 mm. long, 7-9-nerved, acute, finely hairy to glabrous, chartaceous-coriaceous.
    Palea
    Palea thinly 7-9-nerved, linear-oblong, with the apex truncate.
    Lodicules
    Lodicules 1·5-2 mm. long.
    Anthers
    Anthers 3·5-5 mm. long, linear.
    Fruits
    Caryopsis 4·5-6 mm. long, blackish-brown.

    Images

    Distribution

    Native to:

    Burundi, Cameroon, Congo, Ethiopia, Kenya, Malawi, Rwanda, Sudan, Tanzania, Uganda, Zambia, Zaïre

    Oldeania alpina (K.Schum.) Stapleton appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    May 1, 1998 Etuge, M. [2292], Cameroon Arundinaria alpina K000339491
    May 1, 1998 Etuge, M. [2333], Cameroon Arundinaria alpina K000339493
    May 1, 1998 Satabie, B. [1063], Cameroon Arundinaria alpina K000339496
    May 1, 1998 Zapfack, L. [834], Cameroon Arundinaria alpina K000339492
    May 1, 1998 Kamundi, D. [726], Cameroon Arundinaria alpina K000339494
    May 1, 1998 Kamundi, D. [726], Cameroon Arundinaria alpina K000339495
    Jan 1, 1955 Goetze, W. [1145], Tanzania Arundinaria alpina K000345514
    Renvoize [2060], Tanzania Arundinaria alpina K000795295
    Snowden, J.D. [1495], Uganda Arundinaria alpina K000795260
    Snowden, J.D. [1610], Uganda Arundinaria alpina K000795263
    Snowden, J.D. [1610], Uganda Arundinaria alpina K000795288
    Meyer, F.G. [7750], Ethiopia Arundinaria alpina K000795261
    Meyer, F.G. [7658], Ethiopia Arundinaria alpina K000795262
    Meyer, F.G. [8629], Ethiopia Arundinaria alpina K000795264
    Meyer, F.G. [8770], Ethiopia Arundinaria alpina K000795280
    s.coll. [s.n.], Congo, DRC Arundinaria alpina K000795265

    First published in PhytoKeys 25: 100 (2013)

    Accepted by

    • Govaerts, R. (2019). World Checklist of Vascular Plants (WCVP Database) The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Hedberg, I. & Edwards, S. (eds.) (1995). Flora of Ethiopia and Eritrea 7: 1-430. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
    • Ndabaneze, P. (1989). Catalogue des Graminées du Burundi Lejeunia; Revue de Botanique, n.s., 132: 1-127.
    • Hepper, F.N. (ed.) (1972). Flora of West Tropical Africa, ed. 2, 3(2): 277-574.
    • Clayton, W.D. (1970). Gramineae Flora of Tropical East Africa 1: 1-176.
    • Lewalle, J. (1970). Liste floristique et répartition altitudinale de la flore du Burundi occidental: 1-84. Université officielle de Bujumbura.

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Flora of West Tropical Africa
    Flora of West Tropical Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0