Hypericum adpressum
Hypericum canariense
creeping St. John's-wort
Canary Island st john's wort, Canary Islands St. John's wort
internodes 4-lined at first, then terete.
spreading, sessile;
blade narrowly elliptic to narrowly elliptic-oblong, 20–70 × 5–15 mm, (proximal usually narrower), base narrowly cuneate to subangustate, margins plane, apex acute to apiculate-obtuse, midrib with 8–12 pairs of branches, tertiary veins densely reticulate toward margins.
rounded-corymbiform, 13–60-flowered, narrowly branched, without subsidiary branches.
broadly rounded-pyramidal to broadly cylindric, to 30-flowered.
10–15 mm diam.;
sepals persistent, not enclosing capsule, 5, ovate-lanceolate to lanceolate, subequal, (2–)4–7 × 1–1.5 mm;
petals 5, bright yellow, obovate-oblanceolate, 6–8 mm;
stamens persistent, 60–80;
ovary 3-merous, placentation parietal.
sepals lanceolate, unequal, 3–4.5 × 1–2.2 mm;
petals bright yellow, not red-tinged, oblanceolate-unguiculate, 12–17 mm;
anther gland yellow to orange;
styles widely spreading, 8–14 mm.
ellipsoid to ovoid-ellipsoid, 3.5–6 × 2–4 mm.
pyramidal-ovoid to ovoid-ellipsoid, 9–12 × 7–8 mm.
slightly carinate, 0.6–0.7 mm;
testa scalariform.
1.5–2 mm, narrowly winged;
testa linear-reticulate to linear-foveolate.
= 18.
= 40.
Hypericum adpressum
Hypericum canariense
Hypericum adpressum is more herbaceous and rhizomatous than H. sphaerocarpum and has narrower capsules and smaller seeds.
The plants with aerenchymatous tissue in the rhizome (var. spongiosum) are not taxonomically distinct but merely the result of a habitat-induced modification.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Hypericum canariense is established at Montecito and Santa Barbara in the hills (P. A. Munz 1974) and along the coast north of Santa Cruz to San Francisco, at locations in Orange and San Mateo counties, and in the San Diego coast region.
The description above agrees with that for Hypericum floribundum regarding sepals lanceolate and acute; in typical H. canariense they are oblong-spatulate and rounded. The variation is continuous; only one species is recognized here.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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