View source for Amsonia grandiflora

{{Treatment/ID
|accepted_name=Amsonia grandiflora
|accepted_authority=Alexander
|publications={{Treatment/Publication
|title=Torreya
|place=34: 116. 1934
|year=1934
}}
|special_status={{Treatment/ID/Special_status
|code=C
|label=Conservation concern
}}
|basionyms=
|synonyms=
|hierarchy=Apocynaceae;Amsonia;Amsonia subg. Sphinctosiphon;Amsonia grandiflora
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Apocynaceae]]</div><div class="higher-taxon"><small>genus</small>[[Amsonia]]</div><div class="higher-taxon"><small>subgenus</small>[[Amsonia subg. Sphinctosiphon]]</div><div class="higher-taxon"><small>species</small>[[Amsonia grandiflora]]</div></div>
|volume=Volume 14
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>erect, 38–80(–90) cm, glabrous; branches borne on distal part of stem, at least slightly exceeding infructescence. <b>Leaves</b>: petiole 0–3(–5) mm, glabrous; blades somewhat heteromorphic or all linear; stem leaf blades linear to ligulate or very narrowly lanceolate to very narrowly elliptic, (5.5–)7–12(–14) cm × (2.5–)3–6(–8) mm, margins entire, sometimes slightly revolute, sparsely ciliate, apex narrowly acute, surfaces glabrous; branch leaf blades linear, (4.8–)5.5–9(–10) cm × (1–)1.5–2.6(–3.1) mm. <b>Flowers</b>: sepals subulate to narrowly deltate, often weak and curved, (3–)4.5–6.5(–7) mm, glabrous; corolla tube blue (to whitish), 16–21.5 mm, lobes bluish to white, turning blue with age (pinkish), 9.5–14(–16) mm, outer surface of corolla glabrous. <b>Follicles</b> erect, 4–12(–15) cm × 3.1–4(–4.5) mm, apex acuminate, glabrous. <b>Seeds</b> 6.4–11 × 2–3 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring (rarely summer); fruiting summer.
|habitat=Woodlands, hillsides, canyon bottoms and gullies, open ground, often near water.
|elevation=800–1400 m.
|distribution=Ariz.;Mexico (Sonora).
|discussion=<p>Amsonia grandiflora is primarily restricted to Pima and Santa Cruz counties and rarely extends to Maricopa County and adjacent regions of Mexico. In Mexico, it is largely or entirely restricted to the state of Sonora; it reportedly rarely occurs in Durango, but no specimen was seen. It may be distinguished from A. palmeri by its larger flowers. Fruiting specimens of A. grandiflora will typically have somewhat shorter leaves than narrow-leaved individuals of A. palmeri, and the sepals are on average longer.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Amsonia grandiflora
|authority=Alexander
|rank=species
|parent rank=subgenus
|synonyms=
|basionyms=
|family=Apocynaceae
|phenology=Flowering spring (rarely summer); fruiting summer.
|habitat=Woodlands, hillsides, canyon bottoms and gullies, open ground, often near water.
|elevation=800–1400 m.
|distribution=Ariz.;Mexico (Sonora).
|reference=None
|publication title=Torreya
|publication year=1934
|special status=Conservation concern
|source xml=
|genus=Amsonia
|subgenus=Amsonia subg. Sphinctosiphon
|species=Amsonia grandiflora
}}<!--

-->[[Category:Treatment]][[Category:Amsonia subg. Sphinctosiphon]]