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Hypericum petiolulatum petiolulatum (Hypericum petiolulatum petiolulatum)


Herbs,perennial (or annual),1-50 cm,erect or ascending to procumbent or prostrate from creeping and rooting base;stems much branched,branches curved-ascending to spreading or straggling,all or mostly flowering.Stems terete,slender,eglandular.Leaves with petiole 1-7(-10) mm;blade oblong or lanceolate-elliptic to obovate or suborbicular,0.5-3.5(-5.2) × 0.3-1(-1.7) cm,thickly papery to submembranous,abaxially paler or glaucous;laminar gland dots pale,rather large,fairly dense,usually ± prominent,rarely also 1 or 2 black;intramarginal or marginal glands black,dense especially distally;main lateral veins 3-paired,tertiary reticulation fine,rather dense;base cuneate to angustate or more rarely rounded to subcordate,apex rounded to rarely obtuse.Inflorescence (1-)5-28-flowered,from 1 or 2 nodes,usually with long (1-)3-7-flowered branches from up to 5 nodes below,the whole narrowly to broadly pyramidal;bracts and bracteoles linear (or lower bracts leaflike),entire or more rarely with scattered black marginal glands,sessile or on short cilia,and sometimes glandular auricles.Flowers 5-8 mm in diam.,stellate;buds ellipsoid,apex obtuse.Sepals free,erect in bud,spreading in fruit,equal to unequal,very narrowly oblong-lanceolate or rarely narrowly elliptic-oblong to linear,2.3-3.2(-3.4) × 0.5-0.9 mm;laminar glands pale or rarely black,lines to dots,variable in size and number;marginal or submarginal glands black or reddish,few (sometimes only apical) or absent;margin entire or occasionally sparsely glandular-ciliate (especially toward base),apex acute or rarely subacute;veins 3.Petals bright yellow,narrowly oblong,3-5.5 × 1-1.2 mm,ca.1.5 × as long as sepals;laminar glands pale,1 or 2 dots,or absent;marginal glands 1 or 2 near apex and occasionally elsewhere,sessile or immersed;margin entire.Stamens (9-)17-22,apparently 3-fascicled,longest (2.5-)3-5 mm,0.7-1 × as long as petals.Ovary broadly to narrowly ellipsoid;styles 3(or 4),(0.5-)1-2.5 mm,0.65-1.3 × as long as ovary,outcurving.Capsule broadly ovoid to orbicular,3.5-4 × ca.3.5 mm,exceeding sepals.Seeds yellow-brown,0.5-0.6 mm;testa densely but shallowly reticulate-scalariform.Fl.Jun-Aug(-Oct),fr.Aug-Nov.

Taxonomic tree

  • Domain: Eukarya

    • Kingdom: Plantae

      • Phylum:

        • Class: Magnoliopsida

          • Order: Malpighiales

            • Family: Hypericaceae

              • Genus: Hypericum