Hypericum calycinum L.

Shrub 0-2-0-6 m tall, evergreen, with creeping branching stolons and erect, usually unbranched stems. Stems brownish-orange to red, 4-lined, ancipitous when young; internodes 20-60 mm long, shorter than leaves; bark grey. Leaves subsessile or with petiole up to 2 mm long; lamina 45-95(-104) x 15-39(^5) mm, oblong to elliptic or ± narrowly ovate, obtuse to apiculate, margin plane, base cuneate to rounded, paler beneath, not glaucous, coriaceous, lower ones eventually deciduous; venation: 3-4 pairs main laterals, not clearly distinct from midrib branches, with tertiary reticulum dense, conspicuous especially beneath; laminar glands very short streaks or dots in the reticular areolae; ventral glands absent. Inflorescence l(2-3)-flowered; pedicels absent or 10-12 mm long; bracts small, lanceolate, persistent. Flowers 50-80(-95) mm in diam., stellate; buds broadly ovoid to globose, rounded. Sepals 10-20 x 7-15 mm, free, imbricate, markedly unequal, erect in bud, ± ascending in fruit, broadly elliptic to subcircular or obovate, ± cucullate, margin entire or minutely and remotely denticulate, midrib not distinct, veins not prominent; laminar glands linear, distally dissected, numerous. Petals bright yellow, not tinged red, spreading, 25-40 x 13-22 mm, 2-2.5 x sepals, obovate to oblanceolate, with apiculus lateral, rounded, margin entire or minutely and remotely denticulate, eglandular. Stamen fascicles each with 90-120 stamens, longest 20-30 mm long, c. 0-75 x petals; anthers red or rarely bright yellow. Ovary 5-9 x 3.5-6.5 mm, ovoid to ovoid-conic; styles (5 or rarely 4) 12-20 mm long, 1.5-3 x ovary, free, erect or spreading; stigmas small. Capsule 10-20 x 10-13 mm, ovoid to ovoid-conic or rarely narrowly ovoid-cylindric. Seeds reddish-brown, 1-5-2 mm long, cylindric, not or narrowly carinate, shallowly linear-reticulate to -foveolate.