Lobelia philippinensis subsp. biliranensis, 2011

Lammers, Th. G., 2011, Revision of the Malesian species of Lobelia section Rhynchopetalum (Campanulaceae: Lobelioideae), Blumea 56 (3), pp. 218-224 : 221

c. subsp. biliranensis Lammers , subsp. nov. — Fig. 1c

Plantae insulae Biliranae a plantis conspecificis in insula Luzonis bracteis latioribus 1.8–2 mm latis, hypanthio oblongo vel elliptico longitudine 1/4 –1/5 corollae, corolla pallente rosea breviore 26–28 mm longa cum tubo decurvato, corollae lobis ventralibus connatis per 2/3 vel plurem longitudinis, superficie antherarum glabro, antheris dorsalibus brevioribus 4–4.3 mm longis,et barba antherarum ventralium breviore c. 2 mm longa distinguenda. — Holotypus: Sulit 5578 ( L), Philippines, Biliran, Mt Suiro , northern slope, open ridge, 1230 m, 13 May 1954 .

Stems glabrous or sparsely short-pubescent. Leaves glabrous adaxially, sparsely short-pubescent (primarily on midvein) abaxially. Bracts linear or narrowly elliptic, 21–24 by 1.8 –2 mm; bracteoles 0.5 –1 mm long. Hypanthium oblong or ellipsoid, 6 –7 by 4 – 4.5 mm, moderately short-pubescent. Calyx lobes 11–14 by 1.2–1.7 mm. Corolla pale pink, 26– 28 mm long, 4 – 5 times longer than hypanthium, sparsely short-pubescent; tube decurved, 13 –15 mm long; dorsal lobes c. 13 by 0.5 mm; ventral lobes c. 13 by 1.5 –1.8 mm, connate for almost their entire length. Filament tube sparsely short-pubescent in lines; anther tube c. 1.5 mm diam, its surface glabrous; dorsal anthers 4 –4.3 mm long; ventral anthers c. 3 mm long, bearded at apex with white trichomes c. 2 mm long.

Distribution — Endemic to Biliran in the Philippines and known only from the type.

Figures

Fig. 1 Flowers of Lobelia philippinensis Skottsb. a. subsp. philippinensis; b. subsp.negrosensis Lammers; c. subsp.biliranensis Lammers (a: Elmer 6066, NY; b: Philippine Plant Inventory 6380, BRIT; c: Sulit 5578, L).