Part 7. JUNCACEAE 2: Juncus - Species Plantarum Programme

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SPECIES PLANTARUM — FLORA OF THE WORLD (2002)
Confined to, and widely distributed in, S and E South Africa from SW Cape to Transvaal.
Naturalised in the North Island of New Zealand. 27: CPP, LES, NAT, SWZ, TVL. 51: nzn.
A wide range of wet habitats from sea level to the mountains, mostly along streams and in
seepage areas. Map 190.
27. CAPE PROVINCES: Amabela, M. de Vries 2601 (LD); Uitenhaag, Zwartkopsrivier, C.F.Ecklon &
C.Zeyher 13 (LD); 799 (S); Port Elizabeth, Winterhoek Mtns, T.C.E.Fries, T.Norlindh & H.Weimarck 811,
874, 875 (LD); Fraserburg, Layton, J.P.H.Acocks 23534 (K); Stellenbosch, Firgrove, R.S.Adamson 129, 137
(BOL). LESOTHO: Sehlabathebe, Tsoelikana Valley, F.K.Hoener 2152 (K). NATAL: Port Shepstone,
C.J.Ward 5209 (K, PRE); Clairwood, Durban, R.E.Fries & T.C.E.Fries 3137 (LD). TRANSVAAL:
Lydenburg, Lisabon State Forest, C.Reid 823 (K, PRE).
The type of J. diaphanus, the H.Bolus 188* specimen, evidently a (major) part of the
holotype, annotated by Buchenau before the time of publication of his study (1875),
originally in herb. O.W.Sonder, nowadays in S, in all likelihood represents a pallid,
hexandrous, ±broad-leaved Juncus dregeanus. The plant may well be perennial, although its
base is more slender than in the typical form. In its general habit, it also approaches plants
described as J. sonderianus. Another rather aberrant form was described as J. mollifolius.
It differs in its flaccid leaves and slender stems and, most notably, in a more loosely
caespitose growth; in all the more substantial characters it is identical with J. dregeanus
s. str., only the seed size is at the upper limit. It might represent a third subspecies of
J. dregeanus but further study is needed.
13b. Juncus dregeanus subsp. bachitii (Steud.) Hedberg, Symb. Bot. Upsal. 15(1):
61 (1957)
Juncus bachitii Hochst. ex Steud., Syn. Pl. Glumac. 2: 305 (1855). T: 'Abyssin.' [Ethiopia, Tigre Province],
Mt Bachit, 11000 ft., Schimper 114; holo: P, n.v.; iso: PRE, W.
Illustrations: S.Carter, in E.Milne-Redhead & R.M.Polhill Fl. Trop. E. Africa, Juncaceae 5, fig. 1 (1966);
K.A.Lye, in S.Edwards, Sebsebe D. & I.Hedberg, Fl. Ethiop. Eritr. 6: 388, fig. 211.1 (1997).
Capitulum bracts brownish. Tepals blackish brown to dark brown. Stamens 6. Seeds
0.35–0.55 mm long. 2n = c.40, fide I.Hedberg & O.Hedberg, Bot. Not. 130: 11 (1977). Fig. 50.
In the mountains of the NE, E, and W-C parts of South Tropical Africa. 23: CMN, RWA,
ZAI. 24: ETH, SUD. 25: KEN, TAN, UGA. 26: MLW, ZAM, ZIM. In marshes and along
streams, mainly in mountain forests, rarely in wet alpine grasslands, usually above 2000 m.
Map 191.
23. CAMEROON: Bamenda Highlands, Mt Oku, 2900 m, I.Fokom 141 (K). ZAIRE: Karisimbi, 3300 m,
J.-H.Humbert 8588 (P). RWANDA: Karisimbi, Visoke saddle, Hagenia Zone, W.D'Arcy 7563 (CHR, MO,
n.v., NSW). 25. KENYA: Mt Elgon, 3800 m, H.Granvik 140 (LD); Mt Kenya, 3125 m, O.Hedberg 2005
(LD); Aberdare Range, W part of the Nyeri track, 3070 m, O.Hedberg 1599 (LD). TANZANIA:
Kilimanjaro, 2700 m, Volkens 1309 (BM, K). UGANDA: Ruwenzori, Mobuku Valley, 3250 m, O.Hedberg
752 (LD); Muhavura – Mgahinda saddle, 3050 m, Purseglove 2205 (K). 26. ZIMBABWE: Inyanga,
Niarerua Ck, c. 1700 m, T.C.E.Fries, T.Norlindh & H.Weimarck 2407 (LD); Mare Dam in Nyanga Park,
2000 m, S.Laegaard 16038 (LD).
Plants from the southernmost part of the subspecies' range usually have slightly paler
perianth; otherwise they correspond to the typical plants from the north.
14. Juncus sonderianus Buchenau, Monogr. Junc. Cap 476 (1875) [Abh. Naturwiss.
Ver. Bremen 4: 476 (1875)]
T: [Cape] Port Elizabeth, J.F.Drège e; syn: G, K, LD, P, W ['J.F.Drège e' was generally proposed as a type by
Adamson, J. Linn. Soc., Bot. 50: 26 (1935)]; [Cape] bei Cap Recief und Port Elizabeth, C.F.Ecklon &
C.Zeyher 9; syn: BOL, W, S; C.F.Ecklon & C.Zeyher 780; syn: n.v.
Illustration: F.G.P.Buchenau, Monogr. Junc. Cap pl. 10 (1875).
Map: H.Weimarck, Svensk Bot. Tidskr. 40: 160, fig. 8 (1946).
Perennials, 11–35 cm tall, caespitose; rhizome shortly ascending, many-headed; stolons absent.
Leaves basal and subbasal (densely inserted to 5 cm up the stem), mid-green to pale green,
5–17 cm long, c. (1.5–) 2–5 (–7) mm wide; margins partly hyaline-bordered; apex acute;