Hydrolea spinosa |
Hydrolea corymbosa |
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spiny false fiddleleaf |
skyflower |
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Habit | Herbs, erect, to 6 dm, unbranched or with short reproductive branches. | |
Stems | green, brown, or purple, densely pubescent, without glandular trichomes; thorns rare, 1 per node or absent, 4–11 × 0.2–0.6 mm. |
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Leaf | blades lanceolate, 2–5.5 × 0.3–1 cm, base acute to rounded, margins serrulate, surfaces glabrous or pubescent. |
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Inflorescences | terminal, leafy panicles or corymbs, 15–30-flowered. |
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Flowers | sepals lanceolate, 4.5–7 × 1–2 mm, hispid-hirsute, with glandular trichomes; corolla blue, petals 10–15 × 5–8 mm; ovary glabrous or puberulent, upper 1/2 often with glandular trichomes; styles 2, 5–10 mm, glandular-pubescent toward bases. |
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Capsules | globose to slightly ovoid, 3–4.5 × 2.5–4 mm, upper 1/2 puberulent or glandular-pubescent. |
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Seeds | broadly ovoid, symmetric, 0.6–0.7 × 0.3–0.4 mm. |
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Hydrolea spinosa |
Hydrolea corymbosa |
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Phenology | Flowering Jul–Sep. | |
Habitat | Wet roadsides and ditches. | |
Elevation | 0–20 m. (0–100 ft.) | |
Distribution |
Mexico; Central America; South America; Texas; Asia
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FL; GA; SC
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Discussion | Varieties 3 (1 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Hydrolea corymbosa is morphologically very similar to the more western H. ovata, sharing the paniculate or corymbose type of inflorescence and similar stem and sepal pubescence. However, H. corymbosa is a much smaller and more slender plant with fewer (if any) thorns, stems that are dark brown or purple, and lanceolate leaves. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 14. | FNA vol. 14. |
Parent taxa | Hydroleaceae > Hydrolea | Hydroleaceae > Hydrolea |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Nama spinosa | Nama corymbosa |
Name authority | Linnaeus: Sp. Pl. ed. 2, 1: 328. (1762) | J. Macbride ex Elliott: Sketch Bot. S. Carolina 1: 336. (1817) |
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