Cyrtandra hirtigera H.J.Atkins & Cronk ( Atkins & Cronk 2001 )

Olivar, Jay Edneil C., Atkins, Hannah J., Hauenschild, Frank & Muellner-Riehl, Alexandra N., 2020, Cyrtandra argentii, a new species of Cyrtandra (Gesneriaceae) from the Philippines, and a review of the C. villosissima group, European Journal of Taxonomy 676, pp. 1-15 : 10

Cyrtandra hirtigera H.J.Atkins & Cronk ( Atkins & Cronk 2001) Figs 1 , 3C, 4C

Material examined

Type

PHILIPPINES • Palawan, Cleopatra’s Needle ; 29 Jan. 1998; Cronk et al. 25433 (holotype: PNH!; isotypes: E!, K!, L!) .

Additional material

PHILIPPINES • San Vicente, Palawan; 4 Aug. 1988; Soejarto & Madulid 6353 (L.2818243) • Mt Beaufort , Palawan; 12 Mar. 1984; Ridsdale SMHI 23 (L.2818051) • Pagdanan Range , Palawan; 22 Apr. 1984; Podzorski SMHI 934 (L.2818049) • Mt Mantalingahan , Palawan; 5 May 1948; Edaño 122 (L.2818048) • ibid.; 4 Mar. 1992; Argent & Romero 9666 (L.3805814) • Malampaya Bay , Palawan; Oct. 1922; Merrill 11573 (US00081506) • Mt Capoas , Palawan; Apr. 1913; Merrill 9500 (US00081487) • Palawan; Apr. 1906; Foxworthy 581 (US00081485, P03899657) • Taytay, Palawan; 31 Jan. 1991; Stone 327 (L.2822680) .

Description

An erect suffrutescent plant, up to 2–2.5 m in height. Stems terete, with crimson or white hairs throughout. Leaves opposite, subequal; petioles 5–8 cm long, densely hirsute; blades 22–30 × 15–18 cm, broadly elliptic, slightly falcate, apex acuminate, base cuneate, not decurrent, margins denticulate, 12–14 pairs of lateral veins, curving and uniting at the margins, densely hirsute on both sides. Inflorescences cymous, axillary, erect, subsessile, with 4–many flowers; peduncle 4–5 mm, densely hirsute; bracts green, ca 1 cm × 5 mm, lanceolate, densely hirsute on both surfaces, persistent; bracteoles up to 5 mm long, densely hirsute on both surfaces; pedicels ca 5 mm long, densely hirsute. Calyx tubular, red or green, ca 1–1.5 cm long, lobes ca 5 mm long, lower lobes ca 6 mm long, acute or narrowly acuminate, densely hirsute externally, with scattered glandular hairs internally and has prominent tufts of hairs at the base. Corolla dull reddish orange or yellowish green, ca 2 cm long, funnel-shaped, lobes slightly bilabiate or subequal, upper lobes, 1–1.5 × 2 mm, lateral lobes 1× 1.5 mm, lower lobes 2× 1.5 mm; glandular hairs externally and internally. Stamens 2; filaments ca 1–1.5 cm long, attached ca 12–13 mm from base of corolla, glabrous; anthers ca 2 mm long, thecae parallel, coherent at apices; staminodes 2, 5– 8 mm long. Gynoecium ca 20 mm long overall; disc cupular with undulate margin, ca 1.5 mm long, glabrous; ovary ca 4–5 mm long, glabrous; style ca 10 mm long, with eglandular hairs throughout; stigma bilobed, ca 2.5 mm across. Fruits ovoid, green, glabrous, ca 1 cm × 5 mm; inflorescence bracts persistent, calyx and style not persistent.

Distribution and habitat

Cyrtandra hirtigera is distributed throughout the island of Palawan and is usually found on slopes near gullies at 30–900 m a.s.l.

Notes

Atkins & Cronk (2001) described two varieties of this species, C. hirtigera var. hirtigera and C. hirtigera var. chlorina , distinguishable by color and shape of their calyces and corolla limbs. Cyrtandra hirtigera var. hirtigera has a crimson indumentum, red calyces with acute lobe apices, and reddish orange corollas with slightly bilabiate limbs. Cyrtandra hirtigera var. chlorina has pale indumentum, green calyces with acuminate lobe apices, and yellowish green corollas with subequal lobes.

Figures

Fig. 1. Map of the Philippines showing known distributions of Cyrtandra argentii Olivar, H.J.Atkins & Muellner sp. nov. (*), C. ferruginea Merr. (■), C. hirtigera H.J.Atkins & Cronk (◆), and C. villosissima Merr. (●) based on collection localities. A single point may represent more than one collection.