Difference between revisions of "Pisonia capitata"
Contr. U.S. Natl. Herb. 13: 388. 1911.
Basionym: Cryptocarpus capitatus S. Watson Proc. Amer. Acad. Arts 24: 71. 1889
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|name=Cryptocarpus capitatus | |name=Cryptocarpus capitatus | ||
|authority=S. Watson | |authority=S. Watson | ||
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| + | |publication_title=Proc. Amer. Acad. Arts | ||
| + | |publication_place=24: 71. 1889 | ||
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Shrubs </b>or small trees, to 6 m; branches dense, spreading at right angles, usually armed with stout, recurved spines 7–14 mm. <b>Stems</b> arching, velvety when young, glabrate later. <b>Leaf</b> blades broadly obovate or suborbiculate, 2–6 × 2–6 cm, base rounded or broadly cuneate, apex rounded, rarely subacute. <b>Inflorescences</b>: [staminate inflorescences subglobose, dense, 1–2 cm diam.]; pistillate inflorescences densely subglobose at anthesis, more open in age; branches divaricate or ascending; fruiting pedicel 0.5–2 cm. <b>Perianths</b>: [perianth of staminate flowers deep red, broadly campanulate, 2–3 mm, densely and shortly viscid-villous]; perianth of pistillate flowers greenish, often blushed with red, 2–2.5 mm, densely puberulent. <b>Fruits</b> clavate, 7–10 × 3–4 mm, densely puberulent between glandular ribs, glands extending entire length of fruits.</span><!-- |
-->{{Treatment/Body | -->{{Treatment/Body | ||
| + | |phenology=Flowering winter–early spring. | ||
|habitat=Protected clefts on rhyolitic soils in arid scrub [tropical deciduous forests, thickets, along watercourses] | |habitat=Protected clefts on rhyolitic soils in arid scrub [tropical deciduous forests, thickets, along watercourses] | ||
|elevation=0-1100 m | |elevation=0-1100 m | ||
|distribution=Ariz.;nw Mexico. | |distribution=Ariz.;nw Mexico. | ||
| − | |discussion=<p>Pisonia capitata is represented in the flora by a single, possibly clonal, population of a few pistillate plants in south-central Arizona several hundred kilometers north of known populations in Sonora, perhaps originating from a freak event of bird dispersal. Plants are not known to have set seed.</p><!-- | + | |discussion=<p><i>Pisonia capitata</i> is represented in the flora by a single, possibly clonal, population of a few pistillate plants in south-central Arizona several hundred kilometers north of known populations in Sonora, perhaps originating from a freak event of bird dispersal. Plants are not known to have set seed.</p><!-- |
| − | --><p>As noted above, pistillate plants of Pisonia capitata and P. aculeata exhibit no apparent differences, nor are there apparent vegetative differences between the species. That plants known in the flora truly represent P. aculeata is an assumption based on geography.</p> | + | --><p>As noted above, pistillate plants of <i>Pisonia capitata</i> and <i>P. aculeata</i> exhibit no apparent differences, nor are there apparent vegetative differences between the species. That plants known in the flora truly represent <i>P. aculeata</i> is an assumption based on geography.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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name=Pisonia capitata | name=Pisonia capitata | ||
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|authority=(S. Watson) Standley | |authority=(S. Watson) Standley | ||
|rank=species | |rank=species | ||
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|basionyms=Cryptocarpus capitatus | |basionyms=Cryptocarpus capitatus | ||
|family=Nyctaginaceae | |family=Nyctaginaceae | ||
| + | |phenology=Flowering winter–early spring. | ||
|habitat=Protected clefts on rhyolitic soils in arid scrub [tropical deciduous forests, thickets, along watercourses] | |habitat=Protected clefts on rhyolitic soils in arid scrub [tropical deciduous forests, thickets, along watercourses] | ||
|elevation=0-1100 m | |elevation=0-1100 m | ||
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|publication year=1911 | |publication year=1911 | ||
|special status= | |special status= | ||
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|genus=Pisonia | |genus=Pisonia | ||
|species=Pisonia capitata | |species=Pisonia capitata | ||
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Latest revision as of 22:56, 5 November 2020
Shrubs or small trees, to 6 m; branches dense, spreading at right angles, usually armed with stout, recurved spines 7–14 mm. Stems arching, velvety when young, glabrate later. Leaf blades broadly obovate or suborbiculate, 2–6 × 2–6 cm, base rounded or broadly cuneate, apex rounded, rarely subacute. Inflorescences: [staminate inflorescences subglobose, dense, 1–2 cm diam.]; pistillate inflorescences densely subglobose at anthesis, more open in age; branches divaricate or ascending; fruiting pedicel 0.5–2 cm. Perianths: [perianth of staminate flowers deep red, broadly campanulate, 2–3 mm, densely and shortly viscid-villous]; perianth of pistillate flowers greenish, often blushed with red, 2–2.5 mm, densely puberulent. Fruits clavate, 7–10 × 3–4 mm, densely puberulent between glandular ribs, glands extending entire length of fruits.
Phenology: Flowering winter–early spring.
Habitat: Protected clefts on rhyolitic soils in arid scrub [tropical deciduous forests, thickets, along watercourses]
Elevation: 0-1100 m
Distribution
Ariz., nw Mexico.
Discussion
Pisonia capitata is represented in the flora by a single, possibly clonal, population of a few pistillate plants in south-central Arizona several hundred kilometers north of known populations in Sonora, perhaps originating from a freak event of bird dispersal. Plants are not known to have set seed.
As noted above, pistillate plants of Pisonia capitata and P. aculeata exhibit no apparent differences, nor are there apparent vegetative differences between the species. That plants known in the flora truly represent P. aculeata is an assumption based on geography.
Selected References
None.
Lower Taxa
None.