Hypericum dyeri (Nomenclature)
Shrub 0-6-1-2 m tall, with branches ± widely spreading. Stems orange to yellow-brown, 2-4-lined and ancipitous when young, soon terete or persistently 2- lined; internodes 10-30(-55) mm, shorter than or very rarely exceeding leaves; bark grey-brown. Leaves petiolate, with petiole 1-2 mm long; lamina 10-50(-60) x 5-24(-35) mm, oblong-lanceolate or lanceolate to ovate, acute to apiculate-obtuse or rounded, margin plane, base cuneate to rounded, discolorous, markedly glaucous beneath, chartaceous to papyraceous; venation: 2-3 pairs main laterals, the upper sometimes forming a ± prominent partial inframarginal vein, with midrib pinnately branched, the branches forming a rudimentary reticulum, tertiary reticulum otherwise very rarely visible; laminar glands short streaks and dots; ventral glands dense. Inflorescence l-31(or more)-flowered, from 1-2-nodes, subcorymbiform to broadly pyramidal, without or with 1 pair of branches below; pedicels 6- 11(- 16) mm long; bracts foliaceous to linear-lanceolate, gradually smaller distally, persistent. Flowers (15-)20-30(-35) mm in diam., stellate; buds ovoid, subacute to rounded. Sepals 4-12 x l-2-5(-3) mm, free, imbricate at base, equal, spreading in bud and fruit, narrowly oblong-lanceolate to linear, acute, with margin entire; midrib visible, veins not prominent; laminar glands interrupted-linear, c. 6-10. Petals bright yellow, not tinged red, spreading, 10-18 x 3-7(-9) mm, c. 1.5-2.5 x sepals, oblanceolate, with apiculus subterminal and rounded or absent; margin entire, eglandular. Stamen fascicles each with c. 20 stamens, longest 8-12(-15) mm long, c. 0.7-0.85 x petals; anthers bright yellow. Ovary 3.5-5 x 2.8-4 mm, broadly ovoid to subglobose; styles 4-7 mm long, 1.5-2 x ovary, free, suberect or gradually divergent, spreading at apex; stigmas capitate. Capsule 7-10 x 5-7 mm, subglobose. Seeds dark reddish- brown, c. 0-9 mm long, narrowly cylindric, not or narrowly carinate, shallowly linear-foveolate.
2n = 20.
On dry open slopes, steep banks, and cliffs, sometimes in woodland, rarely in forest (central Nepal, atypical); 1300-3000 m.
Nepal (Central, West), India (Bihar, Kumaun to Kashmir), Pakistan (Hazara, Swat, Dir).
Despite their wide disjunction, H. dyeri is clearly related to H. maclarenii. Presumably the disjunction was caused, or at least widened, by the eruption of the Himalayan massif. One of the Nepal specimens of H.dyeri (Stainton, Sykes & Williams 447) has large, thin leaves and relatively long pedicels, and is said to grow 'in forest'.