Part 6. JUNCACEAE 1: Rostkovia to Luzula - Species Plantarum ...

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SPECIES PLANTARUM — FLORA OF THE WORLD (2002)
4 Tepals stramineous to pale brownish, with apex often ±reflexed;
inflorescence very lax, with rigidly divaricate branches 17. L. divaricata
4: Tepals blackish brown to dark castaneous-brown, with apex not
reflexed; inflorescence lax to subdense, ±nodding to suberect, with
branches not rigidly divaricate
5 Basal leaves densely to sparsely ciliate. [Mexico to Panama] 14. L. denticulata
5: Basal leaves subglabrous. [Outside C America]
6 Capsule segments usually 3.0–3.5 × 1.8–2.0 mm 19. L. hitchcockii
6: Capsule segments to 2.9 mm long and to 1.6 mm wide
7 Anthers ±equalling filaments or shorter; style up to 0.5 mm long
8 Plants usually more than 30 cm tall; cauline leaves (3–) 4–5,
usually 5–10 mm wide 22. L. parviflora
8: Plants usually up to 30 cm tall; cauline leaves 1–3, usually
less than 5 mm wide
9 Cauline leaves bluish green to greyish green, (2–) 3; lower
bract 1.5–2.5 cm long 18. L. piperi
9: Cauline leaves mid-green, 1–2; lower bract to 1 cm long 15. L. wahlenbergii
7: Anthers (2–) 3–5 (–9) times longer than filaments; style usually
longer than 0.5 mm
10 Capsule segments to 2.4 mm long; seeds stramineous to pale
brown
10: Capsule segments 2.4–3.0 mm long; seeds brown to dark
brown
11 Cauline leaves 10–20 cm long, usually 3–6 mm wide; anthers
24. L. alpinopilosa
usually 3–4 times longer than filaments
11: Cauline leaves up to 6 cm long, usually 4.5–8.0 mm wide;
21. L. desvauxii
anthers usually 5–7 times longer than filaments 20. L. glabrata
13. Luzula gigantea Desv., J. Bot. (Desvaux) 1: 145 (1808)
Juncoides spadicea Kuntze var. gigantea (Desv.) Kuntze, Revis. Gen. Pl. 2: 724 (1891); Juncoides gigantea
(Desv.) E.Sheld., Minnesota Bot. Stud. 1: 62 (1894). T: Colombia, in montibus humidis Quindio in regno
Santa-fe de Bogota, A.Humboldt & A.J.Bonpland; holo: P.
Luzula paniculata Desv., J. Bot. (Desvaux) 1: 147 (1808). T: ‘In America calidiore’; holo: P.
Illustrations: M.Barros, Darwiniana 10: 318, fig. 10 (1953); H.Balslev, Fl. Neotrop. Monogr. 68: 53, fig. 26
(1996).
Map: H.Balslev, Fl. Neotrop. Monogr. 68: 54, fig. 27 (1996).
Perennials 20–90 cm tall; rhizome ascending, 1.5–3.0 mm in diam.; stolons long, ascending.
Basal leaves 10–30 cm long, (5–) 10–20 mm wide, flat; margin densely papillose-serrulate,
ciliate in young leaves; cauline leaves usually 2–4, with upper ones usually up to 10–13 mm
wide; sheaths to 6 cm long; leaf tip acute. Inflorescence a rich loose compound panicle
constituting more than one third of plant height, storied and subdivided by 5–15 cm long
rhachis segments into 4–5 subequal nodding anthelate parts; flowers borne singly (rarely in
clusters of 2–3). Bracts of primary inflorescence branches resembling cauline leaves, with
proximal ones to 20 cm long and distal ones gradually shorter; bracts on distal branches
brownish-membranous, linear-lanceolate, c. 1.0–1.5 cm long. Bracteoles ovate to ovatelanceolate,
brownish-membranous, 1.6–2.0 mm long, usually entire, glabrous or sparsely
ciliate, inserted 0.2–0.5 mm below flowers. Tepals ±unequal, glabrous, acuminate, usually
dark castaneous brown, margins paler; outer tepals usually 2.2–2.7 mm long; inner tepals
usually 2.0–2.5 mm long. Stamens 6, 1.0–1.5 mm long; anthers 0.3–0.6 mm long; filaments
0.7–0.9 mm long; style 0.2–0.3 mm long; stigmas ±patent, 0.6–0.8 mm long. Capsule broadly
ellipsoidal, apiculate, shorter than perianth, castaneous, shining; capsule segments often slightly