Crocanthemum

Contains 6 accepted taxa overall.

Characteristics
Crocanthemum Spach
CISTACEAE
FROSTWEED
View USF Herbarium specimens of this family
Classification
MALVALES
Crocanthemum
Citation
CROCANTHEMUM Spach, Ann. Sci. Nat., Bot., ser. 2. 6: 370. 1836.
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TYPE: Crocanthemum carolinianum (Walter) Spach 1836. (Cistus carolinianus Walter 1788.) Lectotypified by Britton & A. Brown, Ill. Fl. N. U.S., ed. 2. 2: 539. 1913.
Distribution Map Present

This species have been reported in the counties highlighted.

Species
Scientific Name Common Name Herbarium Specimens Status Photos
Crocanthemum arenicola COASTALSAND FROSTWEED Native
Crocanthemum carolinianum CAROLINA FROSTWEED Native
Crocanthemum corymbosum PINEBARREN FROSTWEED Native
Crocanthemum georgianum GEORGIA FROSTWEED Native
Crocanthemum nashii FLORIDA SCRUB FROSTWEED Native
Crocanthemum rosmarinifolium ROSEMARY FROSTWEED Native
Identification Key
1.  Larger leaf blades 9-35 mm wide, 1.5-3.5 times longer than wide, the lower surface and lateral veins usually plainly visible
C. carolinianum
1.  Larger leaf blades 2-9(13) mm wide, 2.5-10 times longer than wide, the lower surface and often the lateral veins concealed or obscured by the dense tomentum
2
2.  Ovary and fruit densely stellate-pubescent, at least in the upper half
3
2.  Ovary and fruit glabrous (persistent inner sepals may be pubescent)
4
3.  Flowers in terminal umbellate clusters; fruit 2-valved
C. arenicola
3.  Flowers in leafy thyrses; fruit 3-valved
C. nashii
4.  Leaf blade attenuate-cuneate at the base; flowers in leafy thyrses
C. rosmarinifolium
4.  Leaf blade cuneate to rounded-cuneate at the base; flowers mostly terminal or subterminal
5
5.  Basal rosette-like leaves absent; flowers usually 5-45 per cluster or cyme (including both chasmogamous and cleistogamous flowers)
C. corymbosum
5.  Basal rosette-like leaves sometimes present; flowers usually 1-3(7) per cluster or cyme (including both chasmogamous and cleistogamous flowers)
C. georgianum
Genus Synonyms
Synonym Full Citation Basionym Type
Heteromeris Heteromeris Spach, Ann. Sci. Nat., Bot., ser. 2. 6: 370. 1836. TYPE: Non designatus.
Horanthes Horanthes (Rafinesque) Rafinesque, Sylva Tellur. 132. 1838. BASIONYM: Anthelis Rafinesque, subg. Horanthes Rafinesque, New Fl. 3: 30. 1838 ("1836"). TYPE: Non desigantus.
Taeniostema Taeniostema Spach, Ann. Sci. Nat., Bot., ser. 2. 6: 371. 1836. TYPE: Taeniostema micranthum Spach