Difference between revisions of "Prosartes"
Proc. Linn. Soc. London 1: 48. 1839.
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|name=Disporum sect. Prosartes | |name=Disporum sect. Prosartes | ||
|authority=(D. Don) Q. Jones | |authority=(D. Don) Q. Jones | ||
| + | |rank=section | ||
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|hierarchy=Liliaceae;Prosartes | |hierarchy=Liliaceae;Prosartes | ||
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|distribution=North America. | |distribution=North America. | ||
|discussion=<p>Species 5 (5 in the flora).</p><!-- | |discussion=<p>Species 5 (5 in the flora).</p><!-- | ||
| − | --><p>The American species have long been treated as section Prosartes of the otherwise Asian genus Disporum (H. Hara 1988; Q. Jones 1951). However, cytological, morphological, and molecular evidence indicates a degree of difference that justifies generic status for this group (M. N. Tamura et al. 1992; Z. K. Shinwari et al. 1994; T. Fukuhara and Z. K. Shinwari 1994). Within Prosartes there are two disjunct, east-west pairs: P. lanuginosa and P. hookeri, and P. trachycarpa and P. maculata (F. H. Utech et al. 1995; C. E. Wood Jr. 1970).</p> | + | --><p>The American species have long been treated as section <i>Prosartes</i> of the otherwise Asian genus Disporum (H. Hara 1988; Q. Jones 1951). However, cytological, morphological, and molecular evidence indicates a degree of difference that justifies generic status for this group (M. N. Tamura et al. 1992; Z. K. Shinwari et al. 1994; T. Fukuhara and Z. K. Shinwari 1994). Within <i>Prosartes</i> there are two disjunct, east-west pairs: <i>P. lanuginosa</i> and <i>P. hookeri</i>, and <i>P. trachycarpa</i> and <i>P. maculata</i> (F. H. Utech et al. 1995; C. E. Wood Jr. 1970).</p> |
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|references={{Treatment/Reference | |references={{Treatment/Reference | ||
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|publication year=1839 | |publication year=1839 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V26/V26_225.xml |
|genus=Prosartes | |genus=Prosartes | ||
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-->[[Category:Treatment]][[Category:Liliaceae]] | -->[[Category:Treatment]][[Category:Liliaceae]] | ||
Latest revision as of 22:13, 5 November 2020
Herbs, from slender, knotty rhizomes with fibrous roots, generally pubescent throughout. Stems branched distally, with 2–5 papery bracts sheathing proximally. Leaves sessile or subsessile; blade broadly ovate to oblanceolate, veinlets forming loose reticulum. Inflorescences strictly terminal. Flowers 1–4(–7) in a cluster, nodding, pedicellate; tepals deciduous, distinct, weakly gibbous proximally; stamens hypogynous, basally adnate to tepals; filaments filiform to basally dilated; anthers linear-oblong, extrorse; ovary superior, sessile, 3-locular, narrowly ellipsoid to obovoid, ovules 2–6 per locule, pendulous or horizontal; style included or exserted, filiform; stigma not lobed or weakly 3-lobed; pedicel slender. Fruits baccate, straw-colored to red, ± fleshy. Seeds light yellow to orangish brown, ellipsoid to oblong, smooth. x = 6, 8, 9, 11.
Distribution
North America.
Discussion
Species 5 (5 in the flora).
The American species have long been treated as section Prosartes of the otherwise Asian genus Disporum (H. Hara 1988; Q. Jones 1951). However, cytological, morphological, and molecular evidence indicates a degree of difference that justifies generic status for this group (M. N. Tamura et al. 1992; Z. K. Shinwari et al. 1994; T. Fukuhara and Z. K. Shinwari 1994). Within Prosartes there are two disjunct, east-west pairs: P. lanuginosa and P. hookeri, and P. trachycarpa and P. maculata (F. H. Utech et al. 1995; C. E. Wood Jr. 1970).
Selected References
Lower Taxa
Key
| 1 | Ovary broadly ovoid to obovoid or obconic to obpyriform, becoming 3-lobed after anthesis, papillose, sometimes also with ascending, stellate glandular hairs; ovules horizontal; leaf margins moderately pubescent, hairs scattered, flattened. | > 2 |
| 1 | Ovary ellipsoid or ovoid to obovoid, glabrous or somewhat pubescent; ovules pendulous; leaf margins glabrous or short-pubescent. | > 3 |
| 2 | Leaf apex acute, with 7–9 prominent veins; tepals lacking purple spots and basal claws, 8–15 mm; ovary finely papillose; berries reddish orange to bright red; cordilleran and interior North America. | Prosartes trachycarpa |
| 2 | Leaf apex acuminate, with (3–)5 prominent veins; tepals spotted with purple, narrowly clawed basally, 15–25 mm; ovary papillose with stellate glandular hairs; berries pale straw-colored; e North America. | Prosartes maculata |
| 3 | Stems freely branched; leaf margins glabrous or sparsely pubescent; perianth cylindrical, truncate basally; tepals 15–28 mm; berries 3–6-seeded; coastal w North America. | Prosartes smithii |
| 3 | Stems sparingly branched; leaf margins short-pubescent, hairs pointed sharply forward; perianth turbinate, narrowed basally; tepals 8–22 mm; berries 1–4(–6)-seeded; e, w North America. | > 4 |
| 4 | Tepals greenish yellow, linear-lanceolate, apex long-acuminate; ovary glabrous; stigma weakly 3-lobed; abaxial leaf surface lanulose, densely so on veins; e North America. | Prosartes lanuginosa |
| 4 | Tepals creamy white, oblanceolate, apex short-acuminate; ovary glabrous or somewhat pubescent; stigma unlobed or rarely 3-lobed; abaxial leaf surface scabrous or puberulent, especially on veins; w North America. | Prosartes hookeri |