View source for Rhinotropis

{{Treatment/ID
|accepted_name=Rhinotropis
|accepted_authority=(S. F. Blake) J. R. Abbott
|publications={{Treatment/Publication
|title=J. Bot. Res. Inst. Texas
|place=5: 134. 2011
|year=2011
}}
|basionyms={{Treatment/ID/Basionym
|name=Polygala sect. Rhinotropis
|authority=S. F. Blake
|rank=section
|publication_title=Contr. Gray Herb.
|publication_place=47: 70.  1916
}}
|synonyms=
|hierarchy=Polygalaceae;Rhinotropis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Polygalaceae]]</div><div class="higher-taxon"><small>genus</small>[[Rhinotropis]]</div></div>
|etymology=Greek rhinos, snout, and tropis, keel; alluding to beaked keel petal
|volume=Volume 10
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, subshrubs, or shrubs, single- or multi-stemmed, with or without thorns, then as modified tips of racemes. <b>Stems</b> usually sprawling to erect, sometimes prostrate or decumbent, usually not glaucous, pubescent or glabrous. <b>Leaves</b> alternate; sessile, subsessile, or petiolate; usually not strongly dimorphic; blade surfaces pubescent or glabrous. <b>Inflorescences</b> terminal or leaf-opposed, sometimes appearing axillary if poorly developed, racemes, sometimes reduced and appearing fasciculate or aggregated into pseudopanicles; peduncle present or absent; bracts deciduous to subpersistent or persistent. <b>Pedicels</b> present. <b>Flowers</b> cream, yellowish green,yellow, white, pink, rose, or purple, cleistogamous usually absent, sometimes present (in R. californica and R. lindheimeri), (2.4–)3.5–14.5 mm; sepals deciduous or persistent (when persistent, usually only upper; all persistent in R. rusbyi), sometimes appearing very slightly connate basally, pubescent or glabrous; wings deciduous, 2.5–12.5 mm, glabrous or pubescent; keel usually beaked with unlobed projection, beak sometimes reduced or obscure (rarely on all flowers unless cleistogamous, and then inflorescence usually proximal), keel glabrous or pubescent; stamens usually 7 or 8, rarely 9 (in R. acanthoclada), in chasmogamous flowers, fewer in cleistogamous flowers, not grouped; ovary 2-loculed. <b>Fruits</b> capsules, dehiscent, margins winged or not, glabrous or pubescent. <b>Seeds</b> pubescent to subglabrous, arillate. <b>x</b> = 9.</span><!--

-->{{Treatment/Body
|distribution=w;sc United States;Mexico;Central America (Guatemala).
|discussion=<p>Species 17 (12 in the flora).</p><!--
--><p>Of the 17 species of Rhinotropis ranging from the southwestern United States and/or Mexico, only R. purpusii (Brandegee) J. R. Abbott extends into Guatemala. Of all the genera treated here, this is the only one that has been monographed within the last 100 years (T. L. Wendt 1978). Rhinotropis is probably sister to the Caribbean clade Phlebotaenia Grisebach, and appears to be fairly closely related also to the pantropical (although predominantly neotropical) genus Securidaca Linnaeus. Rhinotropis is largely endemic to arid regions but some species (R. californica) occur in mesic areas.</p><!--
--><p>The flower beak is a cylindric, conic, or contorted non-fimbriate hollow projection from the lower (or central) apex of the keel region. It is highly reduced or absent in some species. The other diagnostic features of Rhinotropis are also not monothetic across all species. Many species have the upper sepal persistent in fruit and the other sepals, including the wings (and the corolla), deciduous. Unlike other North American Polygalaceae, species of Rhinotropis often have five petals; the lateral petals are much reduced, linear, and adnate for most of their length to the staminal column; additionally, several species are shrubs and a few have thorn-tipped inflorescence axes.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|- id="key-0-1"
|1
|Shrubs or subshrubs; racemes thorn-tipped; sepals deciduous.
|[[#key-0-2| > 2]]
|- id="key-0-1"
|1
|Herbs, subshrubs, or shrubs; racemes usually not thorn-tipped (except usually weakly thorn-tipped in R. rusbyi, then all sepals persistent in fruit); upper sepal persistent in fruit or all deciduous.
|[[#key-0-5| > 5]]
|- id="key-0-2"
|2
|Flowers (2.5–)3–5(–5.3) mm; sepal wings usually cream or greenish; keel petals without beaks or beaks to 0.5–0.7 mm; stems densely pubescent to glabrate, not glaucous.
|[[#key-0-3| > 3]]
|- id="key-0-2"
|2
|Flowers (6–)7–14.5 mm; sepal wings usually pink, sometimes light green; keel petals with prominent beaks (1–4 mm); stems glabrous or pubescent, often glaucous, at least when young.
|[[#key-0-4| > 4]]
|- id="key-0-3"
|3
|Leaves and stems densely pubescent, with short, spreading hairs; pedicels 1.5–4(–5.8) mm, usually shorter than flowers, pubescent; non-wing sepals pubescent, hairs spreading.
|[[Rhinotropis acanthoclada|Rhinotropis acanthoclada]]
|- id="key-0-3"
|3
|Leaves densely pubescent with incurved hairs, stems densely pubescent or glabrate, hairs matted or shaggy, appressed, incurved or, sometimes, spreading; pedicels (2.5–)3–7(–9) mm, usually longer than flowers, glabrous; non-wing sepals glabrous or subapically sparsely hairy.
|[[Rhinotropis intermontana|Rhinotropis intermontana]]
|- id="key-0-4"
|4
|Keel petal beaks with 1 or 2 prominent invaginations along abaxial side (formed by sinuate excess tissue); seeds most densely pubescent apically, proximal 1/2 sparsely and unevenly pubescent or glabrous.
|[[Rhinotropis heterorhyncha|Rhinotropis heterorhyncha]]
|- id="key-0-4"
|4
|Keel petal beaks entire or slightly erose; seeds ± evenly and moderately densely pubescent, occasionally with glabrate patches.
|[[Rhinotropis subspinosa|Rhinotropis subspinosa]]
|- id="key-0-5"
|5
|Flowers (2.5–)7–14.5 mm (smaller cleistogamous flowers sometimes present in R. californica proximally); sepals all deciduous or all persistent.
|[[#key-0-6| > 6]]
|- id="key-0-5"
|5
|Flowers (2.4–)2.9–7.5(–7.7) mm; upper sepal persistent, others deciduous.
|[[#key-0-8| > 8]]
|- id="key-0-6"
|6
|Sepals persistent; racemes usually weakly thorn-tipped (often not clearly visible when young); Arizona.
|[[Rhinotropis rusbyi|Rhinotropis rusbyi]]
|- id="key-0-6"
|6
|Sepals deciduous; racemes not thorn-tipped; California, Oregon.
|[[#key-0-7| > 7]]
|- id="key-0-7"
|7
|Keel petal beaks oblong, usually notched or contorted, rarely subentire, 0.7–1 mm wide distally; cleistogamous flowers often present, 2.4–5 mm, chasmogamous flowers 9–14.5 mm; perennials, 0.5–3.5 dm; stems laxly erect, decumbent, or prostrate.
|[[Rhinotropis californica|Rhinotropis californica]]
|- id="key-0-7"
|7
|Keel petal beaks linear, entire, 0.2 mm wide distally; flowers all chasmogamous, 7–14 mm; perennials, subshrubs, or shrubs, 1–25 dm; stems erect to sprawling or decumbent.
|[[Rhinotropis cornuta|Rhinotropis cornuta]]
|- id="key-0-8"
|8
|Racemes usually leaf-opposed; keel petals usually with glabrous sacs, beaks (0–)0.5–2 mm; leaf blades usually elliptic, ovate, obovate, lanceolate, or linear, sometimes scalelike, (3–)4–35(–40) mm.
|[[#key-0-9| > 9]]
|- id="key-0-8"
|8
|Racemes terminal, sometimes appearing axillary, but not leaf-opposed; keel petals with incurved-puberulent sacs in distal 1/2, beaks small, occasionally to 1.1 mm; leaf blades usually scalelike, linear, linear-subulate, lanceolate, elliptic, obovate, or ovate, 1–5.9(–15) mm.
|[[#key-0-10| > 10]]
|- id="key-0-9"
|9
|Roots with brown, gray, or dull red-brown cortex, not exfoliating.
|[[Rhinotropis lindheimeri|Rhinotropis lindheimeri]]
|- id="key-0-9"
|9
|Roots with prominent bright orange-red cortex, loosely exfoliating.
|[[Rhinotropis nitida|Rhinotropis nitida]]
|- id="key-0-10"
|10
|Herbs often loosely mat-forming; stems prostrate to laxly erect, not glaucous, glabrous or very sparsely pubescent; leaf blades elliptic, obovate, ovate, or scalelike, (1.5–)2–5.9(–8) mm.
|[[Rhinotropis rimulicola|Rhinotropis rimulicola]]
|- id="key-0-10"
|10
|Subshrubs broomlike, not mat-forming; stems usually erect, glaucous and glabrous, or not glaucous and sparsely puberulent, rarely glabrate; leaf blades often scalelike, sometimes elliptic, linear-subulate, lanceolate, or obovate, some early deciduous, appearing absent, 1–4(–15) mm.
|[[#key-0-11| > 11]]
|- id="key-0-11"
|11
|Flowers pink; capsule bases cuneate; seed bodies often more sparsely pubescent to subglabrous in distal 1/5–1/2; stems usually glaucous, at least proximally, and glabrous.
|[[Rhinotropis maravillasensis|Rhinotropis maravillasensis]]
|- id="key-0-11"
|11
|Flowers usually white or cream, often with purplish center stripe, rarely pink; capsule bases rounded or subtruncate; seed bodies usually evenly pubescent; stems not glaucous, usually sparsely pubescent, rarely glabrate.
|[[Rhinotropis nudata|Rhinotropis nudata]]
|}
</div></div><!--

-->{{#Taxon:
name=Rhinotropis
|authority=(S. F. Blake) J. R. Abbott
|rank=genus
|parent rank=family
|synonyms=
|basionyms=Polygala sect. Rhinotropis
|family=Polygalaceae
|distribution=w;sc United States;Mexico;Central America (Guatemala).
|reference=None
|publication title=J. Bot. Res. Inst. Texas
|publication year=2011
|special status=
|source xml=https://xjsachs2@bitbucket.org/aafc-mbb/fna-data-curation.git/src/e39f0e846f172941159b2045254d62d10d9823f6/coarse_grained_fna_xml/V10/V10_494.xml
|genus=Rhinotropis
}}<!--

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[[Category:Treatment]]
[[Category:Polygalaceae]]