1. Family: Cyperaceae Juss.
    1. Genus: Carex L.
      1. Carex castanostachya K.Schum. ex Kük.

        This species is accepted, and its native range is Kenya (Taita Hills) to Tanzania.

    [FTEA]

    Cyperaceae, K Hoenselaar, B. Verdcourt & H. Beentje. Hypolytrum, D Simpson. Fuirena, M Muasya. Flora of Tropical East Africa. 2010

    Type
    Type: Tanzania, Morogoro District: Uluguru Mts, Stuhlmann s.n. (B†, holo.)(Note: K. Schum. first mentions this name in P.O.A. A: 131(1895) and it appears to be from upper tree line on Kilimanjaro. Haines & Lye fig. 475 is drawn from Schlieben 4188.)
    Habit
    Tufted leafy perennial 0.6–1.5 m tall
    Inflorescences
    Inflorescence brown fairly dense panicles consisting of many smaller delicate secondary panicles with a triangular outline.
    Spikelets
    Spikelets 4–10 mm long, ± 1 mm wide when young but wider when mature utricles spread.
    Glume
    Glumes chestnut brown with paler midrib, ovate-lanceolate, 2–4 mm long, the usually excurrent midrib scabrid
    Fruits
    Utricles pale brown to chestnut brown, 4–4.5 mm long including the 1.5 mm long beak, 0.7–1 mm wide, usually distinctly curved at maturity, scabrid with long hairs at least on margin.
    Ecology
    Moist forest; (1500–)1850–2050 m
    Note
    There is little doubt that C. castanostachya will have to be sunk into C. filicina Nees (in Wight, Contr. Bot. Ind.: 123 (1834)); Koyama in Rev. Fl. Ceylon 5: 375 (1985) (Type: India orientalis, Wight 1916 (K!, holo.)) but whereas the populations in Africa are ± uniform, C. filicina in India has been split into many infraspecific taxa and it and its relatives are very variable. Although C. castanostachya is very similar in inflorescence morphology and utricle structure it has a much less densely pubescent rachis than Wight 1916 and for the present purpose I have maintained it as distinct. Peter (F.D.-O.A. 1: 539 (1938)) cites his 9014 (S Pare Mts, Shengena Mt) as C. filicina Nees var. ceylanica (Boeck.) Kük. and separates it from C. castanostachya Kük. by having spikelets elongate as against ovoid, glumes red-brown not black-brown, utricle beak obliquely cut at apex finally slightly 2-toothed (as against strongly 2-toothed). Kükenthal uses the beak toothing to separate C. filicina and C. castanostachya. A duplicate of 9014 is at Kew and clearly the same as C. castanostachya. Haines & Lye, Sedges & Rushes E. Afr.: 376 (1983) states C. castanostachya is closely related to C. filicina. Peter also cites Schlieben 4188 from Kilimanjaro as C. castanosperma but Haines & Lye whose figure 775 is drawn from Schlieben 4188 give the locality as Nguru Mts and give T 3, 6 & 7 as only localities.
    Distribution
    Range: Not known elsewhere Flora districts: K7 T 2 (see note), T3 T6 T7

    Distribution

    Native to:

    Kenya, Tanzania

    Carex castanostachya K.Schum. ex Kük. appears in other Kew resources:

    First published in H.G.A.Engler (ed.), Pflanzenr., IV, 20(38): 276 (1909)

    Accepted by

    • Gehrke, B. (2011). Synopsis of Carex (Cyperaceae) from sub-Saharan Africa and Madagascar Botanical Journal of the Linnean Society 166: 51-99.
    • Hoenselaar, K., Verdcourt, B. & Beentje, H. (2010). Cyperaceae Flora of Tropical East Africa: 1-466.
    • Govaerts, R. & Simpson, D.A. (2007). World Checklist of Cyperaceae. Sedges: 1-765. The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.

    Literature

    Kew Backbone Distributions
    • Hoenselaar, K., Verdcourt, B. & Beentje, H. (2010). Cyperaceae Flora of Tropical East Africa: 1-466.
    Flora of Tropical East Africa
    • Haines & Lye, Sedges & Rushes of E. Afr.: 376, fig. 775 (1983).
    • Journ. E. Afr. Nat. Hist. Soc. 24(106): 10, fig. 24 (1963)
    • Peter, F.D.O.A. 1: 530 (1938)
    • E.P. 4, 20 (Cyp.-Car.): 276 (1909)

    Sources

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

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. 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 2019. 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