Asclepias compressidens (N.E.Br.) Nicholas

Perennial herb with woody, swollen, deep-seated underground organ. Stems 1-6 per plant, decumbent. Leaves spreading to ascending, linear, occasionally narrowly lanceolate or falcate, 15-85 x (1.5-)2.0-4.5 mm, apex acuminate, base petiolate, occasionally trullate, margins slightly revolute; petiole 1.5-3.0 mm long. Inflorescences umbelliform, terminal, solitary, erect, 1-3 per plant, 4-9-flowered; peduncles 27-35 mm long. Flowers ±1 x 1.1-1.4 mm, pink to light grey. Sepals ascending, lobes lanceolate, 6.6-6.8 x 1.2-2.0 mm. Corolla ascending, petals lanceolate to ovate, connate at base, 0.5-1.8 x ±5 mm, margins slightly revolute, occasionally sinuate, central vein prominent, colour inside lilac-green, outside purple-green, abaxial surface glabrous, adaxial surface canescent. Corona lobes arising from base of staminal column, erect, cucullate, saccate, 3.8-4.2 x 1.7-2.0 mm, upper proximal ends forming two obtuse almost triangular shoulders level with middle of anther-wings, proximal margins concave to lobe base and folded to meet, upper margin entire, curving to form a deltoid, obtuse distal lobe end. Keel dipping near upper distal end, convex and narrow at lobe base. Sinus a narrow central channel, 3.8-4.2 mm long, with tongue-like appendage. Staminal column 3-4 mm long; alar fissure 1.7-1.8 mm long; anther-wings 1.7-1.8 x ±0.7 mm, concave near apex with small notch on margin; anther appendages tongue-like, ovate, 1.0-1.3 x 1.1-1.2 mm, decumbent. Style apex truncated to slightly conical, 2.3-2.8 mm wide. Pollinia clavate to lacrimiform, 1.5-1.6 x ±0.56 mm; translator arms 0.48-0.56 mm long; corpusculum 0.16-0.24 mm wide.

It is a subtropical plant.