Hypericum carinosum (Nomenclature)
Shrub 0-6-C.2-5 m tall, erect, with branches strict, lateral, short (flowering) and long (extension). Stems purplish-brown, 4-lined and ancipitous when young, eventually terete, without epidermal emergences, cortex exfoliating in strips; internodes 2-9 mm long. Leavessessile, spreading from the base or ascending but not imbricate or tetrastichous, persistent; lamina 3.5-5 x 0.8-2 mm, narrowly elliptic or narrowly oblong to oblanceolate-spathulate, plane, rarely apically subconcave, markedly carinate, concolorous, not or slightly glaucous, chartaceous to subcoriaceous; apex acute to subacute, base cuneate to angustate, not sheathing, pairs almost free (interfoliar ridge rudimentary); basal vein 1, unbranched; laminar glands dense, not impressed above, prominent beneath. Inflorescence l-2(3)-flowered, terminal and on short lateral pinnate branches; peduncle and pedicels c. 2 mm long; upper leaves bracteose. Flowers 8-13 mm in diam., stellate. Sepals 2-4.5 x 0.5-1.8 mm, ovate-lanceolate to triangular-lanceolate, acute; veins 3(5), unbranched, midrib distally incrassate; glands linear, interrupted distally. Petals bright (?) yellow, 4-8 x 2-3 mm, c. 2 x sepals, oblong-lanceolate to obovate; apiculus acute; glands linear, interrupted distally. Stamens 40-80, longest 3-4 mm long, 0.5-0.6 x petals. Ovary 1.5-2 x 0.8-1 mm, ovoid; styles 3, 4-6(-7) mm long, c. 2-3 x ovary; stigmas small. Capsule c. 4 x 3.5 mm, subglobose, shorter than sepals. Seeds not seen.
In thickets and woodland margins in the paramo; 2600-3200 (-4500) m.
Colombia (Norte de Santandér, Santandér), Venezuela (Mérida).
H. carinosum is related to H. phellos subsp. phellos 'diversicaule', and its area of distribution is to the south-east of that of the latter. The two taxa, however, are quite distinct, H. carinosum being recognisable (inter alia) by the stem internodes without corky emergences, the smaller, persistent, 1-nerved leaves, and the smaller flowers. H. stenoclados has subacute, subcoriaceous leaves rather than the acute, chartaceous leaves typical ofH, carinosum, but these differences do not merit taxonomic recognition.