Cyrtandra villosissima Merr. ( Merrill 1906 )

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 : 11

Cyrtandra villosissima Merr. ( Merrill 1906)

Figs 1 , 3D, 4D

Material examined

Type

PHILIPPINES • Mindanao , Camp Keithley, Lake Lanao; Jan. 1906; Mrs Clemens 51 (holotype: AAH!; isotypes: F!, US!).

Additional material

PHILIPPINES • Mt Malindang , Misamis Occidental; 16 Mar. 2004; Opiso et al. 2088 (L.3794253) • ibid.; May 1993; Gaerlan et al. 10925 (K000184579, L.3794112) • Mt Hibok-Hibok , Camiguin; 1999; RBGE & PNH 48 (E00743749) • Lake Balunsasayao , Negros Oriental; 11 Sep. 1953; Britton 357 (L.2826671) • Cuernos Mountains , Negros Oriental; 13 May 1948; Edaño 7393 (AAH00092001) • ibid.; Mar. 1908; Elmer 9511 (L.2826672, US00081486) • Mahilucot River , Bukidnon; Jul. 1920; Ramos & Edaño 38649 (L.2826670, US00081488) • Mt Daho , Jolo; Sep. 1924; Ramos & Edaño 43913 (P03899658) .

Description

An erect suffrutescent plant up to 7m in height. Stems terete or slightly grooved,with ferruginous woolly hairs throughout. Leaves opposite, subequal; petioles 3–5 cm long, densely hirsute; blades 11–20× 3.5–8 cm, oblong-ovate to ovate-lanceolate, slightly falcate, apex acuminate, base acute or acuminate, pronouncedly asymmetrical, 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, linear, 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, pale green, lobes linear ca 1.5 cm × 1 mm, densely hirsute. Corolla red, ca 18 mm long, funnel-shaped, lobes orbicular-ovate ca 4 mm long, densely hirsute. Stamens 2; filaments ca 2 mm long; anthers ca 2.5 mm long, thecae parallel, coherent at apices. Gynoecium ca 20 mm long overall, densely hirsute; disc cupular, glabrous; style densely hirsute. Fruits oblong, green, densely hirsute, ca 1 cm × 4.5 mm; calyx and style persistent.

Distribution and habitat

Cyrtandra villosissima is distributed throughout the island of Mindanao and extends to the island of Negros in the Visayas and is usually found in well-shaded areas near ravines.

Notes

Cyrtandra villosissima is vegetatively similar to C. hirtigera . It is distinguishable by its red corolla and green calyces with distinctly linear lobes. Based on available distribution data, C. hirtigera appears to be restricted to the island of Palawan while C. villosissima can be found from Negros Island to the island of Mindanao.

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.