Imperforate St John's-wort
Scientific name: Hypericum maculatum Crantz
Diagnostic features
Erect rhizomatous glabrous perennial.
Stems to 60cm, square in section, wingless.
Leaves with absent or very few translucent glands.
Flowers 15-25mm across.
Petals bright yellow.
Black glands on leaves, petals and sometimes sepals, sessile.
Habitat
Native; grassy, usually moist places.
This species is keyed out on Page 3872 in the Text Key.
Key to the subspecies:
a. Inflorescence-branches arising at c.30°; black glands on petals mainly as superficial dots; sepals (1.7)2-3mm wide, entire.
............... Hypericum maculatum maculatum.
b. Inflorescence-branches arising at c.50°; black glands on petals mainly as superficial lines; sepals 1.2-2mm wide, denticulate.
............... Hypericum maculatum obtusiusculum.
Hybrid
- See Hypericum desetangsii(x) Lamotte (= Hypericum perforatum x Hypericum maculatum) |
