Adenoglossa decurrens (Hutch.) B.Nord.

Erect annual, 4-20 cm high; stem simple basally, repeatedly branching above; first stem internode ciliate with 1-2 mm long, thin, white, spreading hairs, disappearing with age. Leaves opposite or (upper ones) often alternate, rather crowded on young branches, 2-3(-5) cm long, 1-1.5 mm wide, slightly glaucous, with somewhat decurrent base. Peduncles often numerous due to dense branching, 2-15 cm long, slender, up to ca 1 mm thick, flexuous and often nodding before and after anthesis. Involucre 6-10(-12) mm wide. Involucral bracts 11-20, all with very obtuse-rounded apex; outer involucral bracts elliptic-oblong, 2.5-4 mm long, 2-3 mm wide, with 4-7 resiniferous veins; middle bracts elliptic-oblong-obovate, 4-5 mm long, 2.5-4 mm wide, 4-11-veined; inner bracts not distinctly smaller, broadly oblong-obovate-spathulate, 4-5 mm long, 2-4 mm wide, subhyaline, indistinctly veined. Receptacle conical or at least convex with a central conical projection, nude, irregularly warty. Rays usually 4-5(3-8), yellow, 2.5-4 mm long. Tube 1-1.5 mm long, somewhat compressed, with distinct veins and resin canals. Lamina 1.5-2.5 mm long and wide, with 4 main veins and 0-3 in complete vestigial veins, apically ± truncate and shallowly 3-lobed. Style terete with somewhat swollen base, placed on a short nectary. Disc-florets 15-25. Corolla 2-2.5 mm long; tube 0.7-1 mm long; limb 1-1.5 mm long; lobes triangular-ovate, acute, 0.5-0.7 mm long (adaxial lobes shortest and provided with marginal resin canals). Style 1.6-1.8 mm long; branches 0.3-0.4 mm long, truncate or slightly convex at the apex; nectary ca 0.2 mm high and broad. Anthers 0.6-0.7 mm long inch appendage. Achenes obovate in outline, 2-2.5 mm long (excl. pappus), 2.5-3.5 mm wide (inch wings); adaxial side smooth, glossy, faintly midribbed basally; abaxial myogenic striae ca 18-21, alate and transversely striate; lateral wings hyaline, 0.5-1 mm broad, transversely finely striate, apically with a flaplike projection. Pappus of 5-6 scales; adaxial median scale 1-1.5 mm long and wide, scarious; lateral scales 1.5 mm long and 1 mm wide, light brownish, laterally folded with a small abaxial portion; abaxial smaller scales up to 1 mm long, 0.2-0.5 mm wide, light brownish. Pollen grains ca 41 x 43 ?, (spines included). Exine ca 11 ?, thick. Supratectal spines 2.5-3 ? high, pointed with solid tips superimposed upon a minute spheroidal hole. Total number of spines in one grain 45-50 (ca 12 in one mesocolpium), spaced approximately 7-9 ? from each other. Tectum continuous, undulated, 1-2 ? thick, with minute intratectal bacula, below spines bulging and forming a supratectal spiny unit 4-4.5 ? high and wide. Infratectal bacula reduced, leaving a distinct interspace between sexine and underlying nexine, esp. at the poles. Nexine comparatively thick and compact, ca 1.5 ? thick.