View source for Asclepias michauxii

{{Treatment/ID
|accepted_name=Asclepias michauxii
|accepted_authority=Decaisne in A. P. de Candolle and A. L. P. P. de Candolle
|publications={{Treatment/Publication
|title=Prodr.
|place=8: 569. 1844
|year=1844
}}
|common_names=Michaux’s milkweed
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms=
|hierarchy=Apocynaceae;Asclepias;Asclepias michauxii
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Apocynaceae]]</div><div class="higher-taxon"><small>genus</small>[[Asclepias]]</div><div class="higher-taxon"><small>species</small>[[Asclepias michauxii]]</div></div>
|volume=Volume 14
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs.</b> Stems 1–4 (rarely more), spreading to decumbent or ascending, unbranched, 15–30 cm, minutely puberulent with curved trichomes, not glaucous, rhizomes absent. <b>Leaves</b> opposite or alternate, sessile, often ascending and appearing secund, with 0 or 1 stipular colleter on each side of leaf base; blade narrowly linear, 4–9 × 0.1–0.4 cm, chartaceous, base cuneate, margins entire, apex acute, venation faintly eucamptodromous to obscure, surfaces glabrous, margins remotely ciliate to glabrate, laminar colleters absent. <b>Inflorescences</b> terminal, sometimes also extra-axillary at upper nodes, sessile or pedunculate, 6–28-flowered; peduncle 0–4 cm, minutely puberulent with curved trichomes, with 1 caducous bract at the base of each pedicel. <b>Pedicels</b> 9–12 mm, minutely puberulent on 1 side with curved trichomes. <b>Flowers</b> erect, calyx lobes narrowly lanceolate, 2.5–3 mm, apex acute, sparsely puberulent with curved trichomes to glabrate; corolla green to tan, tinged pink or red, inconspicuously striate, lobes reflexed with spreading tips, elliptic, 4–5 mm, apex acute, glabrous; gynostegial column 0.5–1 mm, fused anthers green, broadly cylindric, 1.5–3 mm, wings narrowly right-triangular, open at tip, apical appendages ovate; corona segments cream, often pink-striped, to magenta, stipitate, cupulate, margins not strongly incurved, 2.5–3.5 mm, slightly exceeding style apex, apex obtuse, glabrous, internal appendage falcate, exserted, sharply inflexed over style apex, glabrous; style apex shallowly depressed, pale to deep pink. <b>Follicles</b> erect on straight pedicels, narrowly fusiform, 7.5–12.5 × 0.5–0.7 cm, apex long-attenuate, smooth, minutely puberulent with curved trichomes. <b>Seeds</b> ovate, 7–8 × 5–6 mm, margin winged, faces smooth; coma 1.5–2.5 cm.</span><!--

-->{{Treatment/Body
|phenology=Flowering (Mar–)Apr–Jun(–Sep); fruiting May–Aug.
|habitat=Flats, hills, ridges, bogs, sandhills, ravines, ditches, clay, sandy, and silty soils, pine flatwoods, oak forests, savannas, wet prairies, often following fires.
|elevation=0–200 m.
|distribution=Ala.;Fla.;Ga.;La.;Miss.;S.C.
|discussion=<p>Asclepias michauxii occurs with, and bears an overall similarity to, A. longifolia. They are distinguished easily in flower by the cavitate corona segments with exserted appendages of A. michauxii. Commonly, A. michauxii has decumbent stems with secund leaves, unlike A. longifolia. In fruit, A. michauxii is distinguished easily by straight pedicels. Like A. longifolia, A. michauxii barely enters Louisiana, east of the Mississippi River (Livingston, Saint Tammany, and Tangipahoa parishes), and is considered to be of conservation concern in that state.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Asclepias michauxii
|authority=Decaisne in A. P. de Candolle and A. L. P. P. de Candolle
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Apocynaceae
|phenology=Flowering (Mar–)Apr–Jun(–Sep); fruiting May–Aug.
|habitat=Flats, hills, ridges, bogs, sandhills, ravines, ditches, clay, sandy, and silty soils, pine flatwoods, oak forests, savannas, wet prairies, often following fires.
|elevation=0–200 m.
|distribution=Ala.;Fla.;Ga.;La.;Miss.;S.C.
|reference=None
|publication title=Prodr.
|publication year=1844
|special status=Endemic
|source xml=
|genus=Asclepias
|species=Asclepias michauxii
}}<!--

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