Species Descriptions

5-merous, 3–5(–5.5) mm long, fleshy; papillae sometimes present on the pedicels, receptacle, calyx and corolla; laticifers isolated, elongated present in the corolla and capsules; calyx 1.5–2.2 mm long, golden yellow when dried, finely reticulate and shiny, turbinate-campanulate, ± angled, 3/4 to ca. equaling the corolla tube length, divided 1/2–2/3 to the base, tube 0.4–0.7 mm long, lobes 0.8–2 mm long, equal, triangular-ovate to lanceolate, overlapping at base, acute to acuminate, margins entire; corolla 3–5 mm long, white when fresh, creamy when dried, the tube 1.6–2.4 mm long, cylindric-campanulate to obconic, lobes 2.0–2.6 mm long, narrowly lanceolate, equaling or longer than the corolla tube, initially erect, later reflexed, not overlapping at the base, apex acute, not inflexed; stamens exserted when the flowers are completely open, anthers oblong to linear, 0.6–1 × 0.35–0.5 mm, filaments 0.6–1 mm long; infrastaminal scales absent or reduced to ridges; ovary ovoid to obovoid, not thickened and enlarged apically into a collar, styles evenly filiform, 1.2–2.2 mm long, ca. as long or longer than the ovary.

5-merous, 4.2–6 mm, membranous, white when fresh, creamy-white when dried; papillae present or absent on the calyx and corolla; laticifers visible in the corolla lobes, anthers and infrastaminal scales; calyx 3.2–4 mm, straw-yellow, reticulate, not shiny, campanulate, equaling the corolla tube, divided ca. 1/3, tube 0.8–1.2 mm, lobes 2.2–3 mm, basally overlapping, broadly ovate-triangular, not carinate, margins entire, apex long-cuspidate; corolla 4–5 mm, tube 3–3.3 mm, cylindric, lobes 1.5–2 mm, erect to reflexed, 1/2–2/3 the tube, ovate, overlapping at base, margins entire, apex ± acute, cucullate, with a subterminal dorsal cusp, 0.25–0.4 mm long; stamens not or barely exserted, shorter than corolla lobes, anthers 0.4–0.55 × 0.3–0.4 mm, elliptic, filaments 0.2–0.3 mm; infrastaminal scales 2–2.4 mm long, 1/2–2/3 as long as the tube, bridged at 0.4–0.7 mm, oblong to obovate, dense fringed, fimbriae 0.2–0.4 mm; styles 2.5–3.5 mm, longer than the ovary, evenly filiform.

5-merous, 3.5–4.5 mm, membranous, creamy to reddish-brown both when fresh and dried; papillae absent; laticifers not visible; calyx 1.5–2.2 mm, yellow, finely reticulate, shiny, cupulate, 3/4 to almost equaling corolla tube, divided 1/2–2/3 of the length, tube 0.5–0.8 mm, lobes 1.2–1.6 mm, basally overlapping, oblong-obovate to orbicular, unevenly carinate, margins membranous and minutely erose or denticulate, apex nearly truncate with a dorsal subapiacal dome-like projection, not exceeding the apex; corolla 3–4 mm, tube 1.5–2.2 mm, campanulate, sometimes with horizontal ridges between stamen attachments, lobes 1.2–1.6 mm, erect to spreading or reflexed, ovate-oblong, margins entire to denticulate, apex obtuse, cucullate, often with a dorsal subapical horn-like appendage, 0.1–0.2 mm long; stamens exserted, shorter than the corolla lobes, anthers 0.7–1 x 0.4–0.5 mm, ovate to oblong, filaments 0.4–1 mm; infrastaminal scales 1.5–2 mm long, 3/4 to almost equaling corolla tube, bridged at 0.4–0.6 mm, oblong to almost truncate, dense and long fringed, fimbriae 0.2–0.4 mm; styles 1.8–3.2 mm, longer than the ovary, thick and ± subulate, wider at the base and tapering toward the stigma.

5-merous, 4–7.2 mm (Fig. 1b), fleshy, white when fresh, creamy-white when dried, papillae absent; laticifers not visible; calyx 2.4–3 mm, brownish-yellow, not reticulate or shiny, narrow-campanulate to tubular, 1/2–3/4 of the corolla tube, divided to ca. 1/3 the length, tube 0.6–1.4 mm, lobes 2–2.6 mm, slightly overlapping, ovate to lanceolate, not carinate, with a subterminal dorsal horn-like projection, 0.1–0.3 mm (Fig. 1a); margins membranous, irregular, entire to sparsely denticulate, apex obtuse to acute; corolla 3.8–7 mm, tube cylindric, 2.5–5 mm, lobes 1.2–2.5 mm, initially erect, later spreading or reflexed, 2–3 times shorter than the tube, lanceolate to linear, margins entire, apex acute with a subterminal horn-like projection, 0.2–0.5 mm (Fig. 1c); stamens exerted when corolla lobes are reflexed, shorter than the latter, anthers 0.7–0.9 × (0.3) 0.4–0.6 mm, ovate to oblong, filaments 0.1–3 mm; infrastaminal scales 1.5–2.4 mm long, ca. 1/2 the corolla tube, bridged at 0.2–0.3 mm, linear, bifid or with a few fimbriae, 0.05–0.2 mm; styles 2–3.8 mm, longer than the ovary, subulate