Difference between revisions of "Decumaria"
Sp. Pl. ed. 2, 2: 1663. 1763.
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|distribution=se United States;Asia (China). | |distribution=se United States;Asia (China). | ||
|discussion=<p>Species 2 (1 in the flora).</p><!-- | |discussion=<p>Species 2 (1 in the flora).</p><!-- | ||
| − | --><p>A molecular phylogenetic study of tribe Hydrangeeae (Y. De Smet et al. 2015) found Hydrangea to be polyphyletic. The authors promoted adoption of a broader, monophyletic concept of Hydrangea that includes all eight genera in the tribe, including Decumaria. Decumaria is treated here in its traditional sense.</p> | + | --><p>A molecular phylogenetic study of tribe Hydrangeeae (Y. De Smet et al. 2015) found <i>Hydrangea</i> to be polyphyletic. The authors promoted adoption of a broader, monophyletic concept of <i>Hydrangea</i> that includes all eight genera in the tribe, including <i>Decumaria</i>. <i>Decumaria</i> is treated here in its traditional sense.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year=1763 | |publication year=1763 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V12/V12_1050.xml |
|genus=Decumaria | |genus=Decumaria | ||
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-->[[Category:Treatment]][[Category:Hydrangeaceae]] | -->[[Category:Treatment]][[Category:Hydrangeaceae]] | ||
Latest revision as of 19:13, 5 November 2020
Woody vines. Stems climbing, sometimes trailing and forming loose nonflowering mats. Bark exfoliating in grayish or reddish brown sheets, strips, or strings. Branches spreading laterally or declining; twigs glabrous or with simple trichomes. Leaves deciduous or semideciduous, opposite; petiole present; blade ovate, elliptic, obovate, oblanceolate, subround, or round, herbaceous, margins usually entire, rarely dentate or lobed, plane; venation pinnate. Inflorescences terminal, on shoots of the season, corymbs, (20–)50–100-flowered; peduncle present. Pedicels present. Flowers bisexual; perianth and androecium epigynous; hypanthium completely adnate to ovary, turbinate, strongly 7–12-ribbed in fruit; sepals persistent, 7–12, erect, triangular, glabrous; petals 7–12, valvate, spreading, white, lanceolate, elliptic, or oblong, base essentially sessile, surfaces glabrous; stamens 20–30; filaments distinct, dorsiventrally flattened, linear, tapering abruptly just proximal to apex, apex not 2-lobed; anthers suborbiculate to ovate; pistil 6–12-carpellate, ovary completely inferior, 6–12-locular; placentation axile proximally, parietal distally; style persistent, 1. Capsules turbinate, cartilaginous, dehiscence intercostal, lateral walls separating from ribs, eventually leaving cagelike remnants. Seeds 10–20 per locule, yellow, fusiform. x = 14.
Distribution
se United States, Asia (China).
Discussion
Species 2 (1 in the flora).
A molecular phylogenetic study of tribe Hydrangeeae (Y. De Smet et al. 2015) found Hydrangea to be polyphyletic. The authors promoted adoption of a broader, monophyletic concept of Hydrangea that includes all eight genera in the tribe, including Decumaria. Decumaria is treated here in its traditional sense.
Selected References
None.