Contains 8 accepted taxa overall.
Characteristics
Classification
Citation
ADIANTUM Linnaeus, Sp. Pl. 1094. 1753.
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TYPE: Adiantum capillus-veneris Linnaeus Lectotypified by J. Smith, Hist. Filicum 274. 1875.
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Adiantum anceps | DOUBLE-EDGE MAIDENHAIR | Not Native | ||
| Adiantum capillus-veneris | VENUS'-HAIR FERN; SOUTHERN MAIDENHAIR; COMMON MAIDENHAIR | Native FACU (NWPL) | ||
| Adiantum caudatum | TAILED MAIDENHAIR | Not Native | ||
| Adiantum hispidulum | ROUGH MAIDENHAIR | Not Native | ||
| Adiantum melanoleucum | FRAGRANT MAIDENHAIR | Native Rare-State UPL (NWPL) | ||
| Adiantum tenerum | BRITTLE MAIDENHAIR | Native Rare-State FAC (NWPL) | ||
| Adiantum trapeziforme | DIAMOND MAIDENHAIR | Not Native | ||
| Adiantum villosum | WOOLLY MAIDENHAIR | Native |
Identification Key
1. Leaves 1-pinnate, tip of some leaves prolonged with reduced pinnae and a proliferous bud
1. Leaves usually 2-pinnate, the tip not prolonged, not proliferous
2
2. Ultimate pinnules 2.5-6 cm long, 1.5-6 cm wide
3
2. Ultimate pinnules 0.5-2.5 cm long, 0.5-2.5 cm wide
4
3. Ultimate pinnules subentire with sinuses to 1 mm deep, the lateral pinnules generally broadly ovate, suborbicular, or quandrangular
3. Ulimate pinnules usually conspicuously incised with sinuses to 5 mm deep, the lateral pinnules generally rectangular
4. Petiolule or ultimate pinnule stalk 1-5 mm long, often appearing centrally attached to the blade segment; ultimate pinnule usually with some deep sinuses 1/3 or more the length of the segment,
5
4. Petiolule or ultimate pinnule stalk 0-1 mm long, mostly appearing to be attached to the basal side of the ultimate pinnule; ultimate pinnule lacking sinuses or these <1/5 of the segment length or width
6
5. Dark color of petiolule or ultimate pinnule stalks extending into base of pinnules, not forming an articulate, cup-like swelling
5. Dark color of petiolule or ultimate pinnule stalks not extending into base of pinnules, petiolule or pinnule stalks terminating in an articulated, cup-like swelling at base of blade segments
6. Basal pair of pinnae 1-pinnate; ultimate pinnules 12-25 mm long
6. Basal pair of pinnae 1- to 4-pinnate; ultimate pinnules 5-12 mm long
7
7. Rachis hispid; ultimate pinnules with scattered multicellular hairs; false indusia generally round
7. Rachis strigose; ultimate pinnules glabrous; false indusia crescent-shaped
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| Hewardia | Hewardia J. Smith, J. Bot. (Hooker) 3: 432. 1841. | TYPE: Hewardia adiantoides J. Smith |