Fourpetal Cliffbush (Jamesia tetrapetala)
Description
5�20(�40) dm. Bark exfoliating in gray, orangish gray, or brownish strips or strings. Branches spreading or descending, often stunted and straggly; twigs densely spreading- or retrorse-pilose. Leaves: petiole 1�4(�7) mm, ascending-strigose to canescent or sericeous; blade ovate or obovate, (0.5�)1�2(�2.7) � (0.2�)0.8�1.2(�1.6) cm, base obtuse to usually rounded, sometimes cuneate, usually asymmetric, margins usually dentate, rarely entire, teeth 3�13(�16), apex obtuse to rounded, abaxial surface moderately to densely canescent or sericeous, adaxial sparsely strigose to glabrescent. Inflorescences 1(�3)�flowered; peduncle 2�10 mm, canescent or subsericeous. Pedicels 1�5 mm, canescent or subsericeous. Flowers: hypanthium 2.5�3.5 � 1�1.5 mm, canescent or sericeous; sepals 4, lanceolate to deltate-ovate, (3�)5�9 � (1.5�)2�2.8 mm, margins usually entire, rarely 2-lobed apically, apex acute to obtuse, abaxial surface canescent or sericeous; petals 4, white with pinkish margin or entirely pink, 5�13(�15) � 3�4.9 mm, sparsely to densely strigose or canescent, especially distally; stamens 8; filaments (4�)5�8 � 0.8�1.4 mm; anthers 0.8�1.1 mm; styles 3�5, 4.8�7.7 mm. Capsules 3�5.5(�7) � 2.5�3.5 mm. Seeds 0.6�0.8 mm.
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum: Magnoliophyta
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Class: Magnoliopsida
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Order: Cornales
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Family: Hydrangeaceae
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Genus: Jamesia
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