62 - Cistaceae
from Division 5 - Magnoliophyta
Summary
Annuals or evergreen, woody, dwarf perennials. Leaves opposite at least below, entire, with or without stipules. Inflorescence a simple terminal cyme; flowers actinomorphic, bisexual, hypogynous. Sepals 5, the outer 2 smaller than the inner 3 except in Cistus, or 3 only. Petals 5, predominantly yellow or white. Stamens numerous. Style 1 or absent; stigma 1, but 3-lobed or 5-lobed in Cistus, or stigmas 3. Ovary 1-celled, with many ovules on 3 placentae (5-celled in Cistus). Fruit a capsule with 3 or 5 valves.
Contains 7 genera and about 180 species. Native to temperate areas and especially the Mediterranean.
Capsules with 5, 6 or 10 valves; flowers white to purplish-red 3. Cistus
Capsules with 3 valves; flowers white, pink or yellow 2.
Annuals or perennials, with basal leaf-rosette or a woody stock; style very short or absent 1. Tuberaria
Woody perennials; style at least as long as the ovary 2. Helianthemum
Tuberaria (Dunal) Spach
Helianthemum sect. Tuberaria Dunal
Annual or perennial herbs with basal leaf-rosette or a woody stock. Leaves opposite, entire. Inflorescence a cyme. Sepals 5. Petals 5. Stamens numerous. Stigma more or less sessile. Fruit a capsule.
Contains 12 species, mainly from central and south Europe.
Perennial; flowers about 3 mm wide; petals without a dark spot at base 2. lignosa
Annual; flowers 8–20 mm wide; petals usually with a dark spot at base 2.
Stem up to 30 cm, erect; upper leaves with stipules, scarcely narrower than lower; inflorescence with bracts 1(a). guttata subsp. guttata
Stem up to 10 cm, spreading; upper leaves without stipules, narrower than lower; inflorescence without bracts 1(b). guttata subsp. breweri
T. guttata (L.) Fourr. Spotted Rock-rose Cistus guttatus L.; Helianthemum guttatum (L.) Mill.
Annual herb. Stems up to 30 cm, pale green, more or less procumbent to erect, with stellate and simple eglandular hairs. Leaves medium green, 3-veined; basal forming a rosette, usually dead at anthesis; lower cauline opposite, with lamina 1.5–5.0 cm, elliptical-lanceolate, subacute at apex, entire; upper cauline alternate, shorter and narrower, linear-oblong or linear-lanceolate, more or less revolute, with conspicuous linear stipules; all with stellate hairs on both surfaces or only simple eglandular hairs on upper surface.
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- Information
- Flora of Great Britain and Ireland , pp. 591 - 594Publisher: Cambridge University PressPrint publication year: 2018