Flora of North America species comparison

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Calystegia catesbeiana

Catesby's false bindweed
Habit Perennials, rhizomatous.
Herbage

pubescent to tomentose, hairs usually whitish.
Stems

usually twining-climbing, sometimes proximally erect, distally twining-climbing, to 40–200(–300) cm.
Leaves

blade elliptic-ovate, to 120 × 50 mm, base lobed, lobes obtuse or rounded, to 20 mm.
Bracts

immediately subtending sepals, lanceolate, 12–34 × 10–22 mm, proximally ± keeled, margins ± enfolding sepals, apex acute.
Flowers

sepals 11–17 mm;

corolla white, 44–64(–70) mm.

Calystegia catesbeiana
Distribution
from USDA
se United States
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[BONAP county map]
Discussion

Subspecies 2 (2 in the flora).

Plants of Calystegia catesbeiana, especially subsp. catesbeiana, often have been misidentified as C. sepium because of their climbing habit.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Stems usually weakly twining-climbing, some­times proximally erect, to 40(–100) cm; leaf blades to 60 mm, basal lobes obtuse or rounded, to 11 mm, surfaces usually pubescent, abaxial rarely whitish.
subsp. catesbeiana
1. Stems twining-climbing to 200(–300) cm; leaf blades to 120 mm, basal lobes rounded, 9–20 mm, surfaces densely pubescent to tomentose, abaxial usually whitish.
subsp. sericata
Source FNA vol. 14.
Parent taxa Convolvulaceae > Calystegia
Sibling taxa
C. atriplicifolia, C. collina, C. felix, C. hederacea, C. longipes, C. macounii, C. macrostegia, C. malacophylla, C. occidentalis, C. peirsonii, C. pubescens, C. purpurata, C. sepium, C. silvatica, C. soldanella, C. spithamaea, C. stebbinsii, C. subacaulis, C. vanzuukiae
Subordinate taxa
C. catesbeiana subsp. catesbeiana, C. catesbeiana subsp. sericata
Name authority Pursh: Fl. Amer. Sept. 2: 729. (1813)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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