Barleria obtusa Nees

Perennial herb or subshrub 30-300 cm tall, often scrambling or scandent, sometimes a dwarf shrublet; stems with mixed ± dense short white retrorse or spreading hairs and few to numerous long coarse pale-buff spreading or ascending hairs; upper internodes sometimes also glandular-pubescent. Leaves ovate or elliptic, 2-8 x 1-3.5(4.5) cm, base and apex both shortly attenuate to rounded, surfaces with pale spreading to subappressed hairs, most numerous on margin and veins beneath where sometimes with a swollen base, sometimes with short glandular hairs along margin; lateral veins 3-5 pairs; petiole 5-17 mm long. Inflorescence axillary, flowers solitary or usually in a lax 2-7-flowered unilateral or partially dichasial cyme 3-11 cm long, on spreading and often looping peduncles; primary peduncle 8-45 mm long, indumentum as stem but glandular hairs often more numerous; bracteoles linear or narrowly oblanceolate, recurved, 2-16.5 x 0.5-1.8 mm, margin entire, apex acute; pedicels 0-3 (12) mm long. Calyx green with conspicuous darker parallel primary venation giving a striate appearance; outer lobes subequal or posterior lobe somewhat longer, narrowly oblong-lanceolate to oblanceolate, 8-18 x 2-5 mm, base cuneate, margin entire or with minute teeth formed by swollen hair bases, apex often recurved, acute-to rounded-apiculate, anterior lobe more rarely notched, surfaces with numerous pale-buff or greyish ascending to subappressed hairs and spreading glandular hairs, latter sometimes restricted to margin; lateral lobes pale, linear-lanceolate, 5.5-12 mm long. Corolla 26-44 mm long, pale blue to mauve, with paler tube and with purple stripes in throat, rarely white throughout, mixed glandular-pilose and retrorse eglandular-pubescent externally; tube 17-26 mm long, narrowly campanulate above attachment point of stamens; limb subregular; abaxial lobe 9.5-19 x 8-18 mm, offset by 2 (5) mm; lateral lobes as abaxial but 7-15.5 mm wide; adaxial lobes 9-16.5 x 5.5-10.5 mm. Stamens attached 7.5-13 mm from base of corolla tube; filaments 16-25 mm long; anthers 3-4 mm long; lateral staminodes 2.2-4 mm long, pubescent, antherodes 0.6-0.9 mm long. Ovary glabrous or with few short ascending hairs towards apex; style glabrous; stigma linear, 0.8-1.8 mm long. Capsule 13-16.5 mm long, glabrous or largely so. Seeds 4-4.5 mm long and wide.