Chaenostoma tenuicaule (Hilliard) Kornhall

Perennial herb, stems several from the crown, loosely branched, branches slender, up to c. 150-450 mm long, c. 1-1.5 mm in diam., straggling, narrowly winged, glabrous but sometimes the inflorescence-axis and always the pedicels glandular-puberulous, laxly leafy, brachyblasts wanting. Leaves opposite, the largest c. 10-30 x 0.8-3 mm, smaller upwards, linear, linear-lanceolate or narrowly oblanceolate, apex acute to mucronate, base narrowed, half-clasping, decurrent in a narrow wing to the node below, margins revolute to ± plane, often with 1-3 pairs of small teeth (not always readily seen when margins revolute), entire in small leaves, both surfaces very minutely and sparsely scabridulous, glistening glands on lower surface. Flowers in lax terminal racemes sometimes loosely panicled. Bracts not always sharply differentiated from uppermost leaves, largest c. 1.5-5 x 0.3-0.8 mm, linear to linear-lanceolate, acute. Pedicels (lowermost) 5-20 mm long, glandular-puberulous. Calyx bilabiate, tube 0.8-2 mm long, posticous lobes 2.2-4 x 0.4-0.8 mm, anticous lobes a little broader, glandular-puberulous together with much coarser hairs up to 0.2-0.7 mm long. Corolla tube 10.5-16.5 x 2.5-2.7 mm in throat, narrowly funnel-shaped, limb almost regular, 8-11 mm across, posticous lobes 2.8-4 x 1.8-3 mm, anticous lobe 2.5-4.5 x 1.5-3.2 mm, all oblong-elliptic, pink, throat yellow, glandular-puberulous outside, hairs up to 0.2-0.25 mm long, glistening glands as well, inside weakly bearded with longitudinal bands of clavate hairs. Stamens 4, anticous pair shortly exserted, filaments 1.5-2 mm long, posticous pair included, filaments 1-1.3 mm long, anthers 0.8-1 mm long. Stigma 1-2.7 mm long, exserted. Style 9-13 mm long. Ovary 1-1.5 x 0.8-1 mm, glabrous or a few glistening glands on sutures. Capsule 3-5 x 2-3 mm. Seeds c. 0.8-1 x 0.5 mm, pallid. It has been collected in both flower and fruit in May, November and December.