Codonoboea oreophila Kiew ex C.L.Lim, 2013

Lim, C. L., Kiew, R. & Haron, N. W., 2013, Codonoboea oreophila (Gesneriaceae), a new species from Peninsular Malaysia, Blumea 58 (1), pp. 68-70 : 68-70

Codonoboea oreophila Kiew ex C.L.Lim , sp. nov. — Fig. 1

Diagnosis: Codonoboea pumila simillima, habitu foliorum indumento, sed inflorescentiis unifloris (1–)2-floris in C. pumila , 2–12-floris in C. rubiginosa ) corollis longioribus angustioribusque c. 15.5–18.8 mm longis (usque ad 7 mm in C. nana et C. rubiginosa ) differt.–– Typus: Lim et al. FRI 56646 (holo KEP;iso E, K, L, SING),Peninsular Malaysia, Kelantan,Gunung Stong State Park, Gunung Stong, 1 231 m alt., N5°20'25", E101°56'57", 26 July 2008.

Etymology. From its habitat, because it is only found in montane forest.

Rosette herb. Indumentum of uniseriate, multicellular (about 2 –3(–5)-celled), very fine, translucent, eglandular hairs on young stem, petioles and upper lamina surface, more or less appressed near margin, on lower lamina surface more erect and

1 Forest Research Institute Malaysia, 52109 Kepong, Selangor, Malaysia; corresponding author e-mail: [e-mail].

2 University of Malaya, 50603 Kuala Lumpur, Malaysia.

longer on veins beneath;fine, dark purplish maroon on peduncle, pedicel and calyx; very fine, to 0.3 mm long on corolla outside, corolla lobes short ciliate. Stem branched, (2– 3–)6.5 – 9(–11) cm long, 1.4 –3.8(–7) mm thick, woody, base of stem often creeping, sometimes producing an elongated semi-woody side branch to 8.2 cm long, 1.7 mm thick, pale green in life. Flowering at c. 2.5 cm tall. Upper internodes crowded, lower internodes 5 – 9 mm long, sometimes to 2.5– 3.5(– 4.6) cm in the elongated side branch. Leaves decussate; sessile in young leaves, petioles to (0.5 –)1.5– 2.4(–3.2) cm long, succulent, broadly grooved above in mature leaves; lamina oblanceolate to oblong, 3 –4.8(– 6) by 1.6– 2.2(– 3.1) cm, in life dark green above, brownish to greyish green beneath, drying greyish to greenish brown above, paler beneath, succulent in life, drying thickly leathery; base rounded to broadly cuneate, sometimes cordate, often unequal, margin crenulate, teeth c. 6 – 8 per cm, teeth towards the apex often slightly overlapping the one behind, apex broadly obtuse to rounded; midrib grooved above, prominent beneath, lateral veins to 9 –12 pairs, lower pairs almost parallel, upper pairs sharply arching to apex, obscure above, prominent beneath, intercostal veins inconspicuous. Inflorescences 1(– 2) per axil, 1-flowered. Peduncle slender, (4.4 –)5.8– 6.6(– 9) cm long, erect, with flower held above leaves, dark purplish maroon, apex bent and pointing downwards in bud, upon flowering becoming horizontal. Bract pairs opposite or subopposite, ligulate, c. 0.8 –1.7 by 0.3 mm. Pedicel slender, (0.8 –) 1.2 –1.5 cm long, concolourous with peduncle. Flowers held horizontally; calyx dark purplish maroon, free to base, lobes broadly oblong, apex acute, 1.5 – 2.4 by 0.8 mm, lower lobes slightly longer; corolla trumpet-shaped, to 19 mm long, c. 10 mm wide at mouth, pale lilac, darker on lower and lateral corolla lobes, with streaks of darker purple outside, tube white inside with 2 light yellowish nectar guides near mouth, tube to 10 mm long, 4 mm wide, narrower at base (c. 2 mm wide), corolla lobes 5, apex rounded, upper lobes c. 4 by 3 mm, reflexed, lateral lobes c. 5 by 6 mm, lower lobe c. 5 by 5 mm, lateral and lower lobes spreading from base; stamens with filaments white, filiform, c. 3 mm long, 0.2 mm wide at base, joined to corolla tube c. 4.1 mm from base, slightly bent at base, straight above, anthers white, reniform, c. 0.5 by 1.5 mm, connivent at apex; staminodes 2, to 0.7 mm long, often curled; nectary annular, c. 1 mm tall, lower side slightly taller, shallowly lobed; pistil to 12.5 mm long, not projecting beyond the corolla tube, ovary and style pinkish purple, stigma purple,

© 2013 Naturalis Biodiversity Center

b1

b2

pistil with short eglandular hairs, denser on the ovary, ovary ovoid, c. 4.5 by 1.3 mm, style 7.3 mm long, stigma discoid, c. 0.4 by 0.4 mm, in life glistening, apex dense papillose. Fruits narrowly cylindrical, slightly quadrangular in cross section, splitting on dorsal side, (2.5 –) 3 – 3.5 cm long, 1 mm thick, dark purplish maroon, style persistent to 0.5–0.7 mm long. Seeds ovoid, c. 0.3 by 0.2 mm.

Distribution — Endemic in Peninsular Malaysia, known only from Gunung Stong State Park, Kelantan.

Habitat — Mossy ground and mossy base of trees, and on earth banks on ridges in upper montane forest above 1 000 m altitude.

Other specimens examined. KELANTAN, Gunung Stong State Park – Gunung Stong, Mohd Nur & Foxworthy SFN 12229 (SING), Symington, FMS 37716 (SING), Kiew, RK 2734 (KEP);ridge to Gunung Tera: Chew FRI 53568 (K, KEP, SING); near Saji Swamp: Yao FRI 55850 (KEP).

Figures

Fig. 1 Codonoboea oreophila Kiew ex. C.L.Lim. a. Habit; b1. lamina margin indumentum beneath; b2. close up of lamina margin indumentum beneath; c1. side view of flower; c2. indumentums of corolla lobe outside; d. side view of flower with part of corolla tube and pistil removed; e. corolla inside, showing nectar guide, stamens and staminoids;f. close-up of nectary guide below stamen; g. side view of anthers;h1. pistil with part of calyx removed,to reveal nectary at base; h2. close up of pistil indumentum (all Lim et al. FRI 56646, KEP).