View source for Jepsonia

{{Treatment/ID
|accepted_name=Jepsonia
|accepted_authority=Small
|publications={{Treatment/Publication
|title=Bull. Torrey Bot. Club
|place=23: 18, plate 256. 1896 ,
}}
|basionyms=
|synonyms=
|hierarchy=Saxifragaceae;Jepsonia
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Saxifragaceae]]</div><div class="higher-taxon"><small>genus</small>[[Jepsonia]]</div></div>
|etymology=For Willis Linn Jepson, 1867–1946, California botanist
|volume=Volume 8
|mention_page=page 43, 44, 46, 119, 120, 132
|treatment_page=page 118
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> (acaulescent, heterostylous), not rhizomatous, not stoloniferous; caudex branched or unbranched, ovoid or flat, cormlike, fleshy, without scales. <b>Flowering</b> stems (usually appearing in autumn or winter after basal leaves have withered), erect or ascending, leafless, 3–28 cm, stipitate-glandular, slightly viscid. <b>Leaves</b> in basal rosette and cauline; stipules present; petiole stipitate-glandular; blade ovate to suborbiculate or orbiculate-reniform, shallowly lobed, base cordate, ultimate margins crenate with callous-apiculate teeth, apex obtuse to rounded, surfaces hairy; venation palmate. <b>Inflorescences</b> cymose panicles, (origin of inflorescences not readily resolvable), 2–17-flowered, sometimes flowers solitary, bracteate, (simple or branched distally, glandular-viscid or glabrate). <b>Flowers</b> heterostylous; hypanthium free from ovary except at base, yellow-green to pinkish; sepals 5, yellow-green to pinkish; petals 5, white, veins prominently colored, (spatulate to elliptic, glabrous); nectary tissue not visible; stamens 10; filaments subulate, (alternate ones surpassing sepals); ovary superior, 2-locular, carpels connate to middle; placentation axile (appearing marginal); styles 2; stigmas 2. <b>Capsules</b> folliclelike, 2-beaked. <b>Seeds</b> brownish, irregular in outline with pinched, curved base, reticulate with longitudinal wings or ridges. <b>x</b> = 7.</span><!--

-->{{Treatment/Body
|distribution=Calif.;nw Mexico.
|discussion=<p>Species 3 (3 in the flora).</p><!--
--><p><i>Jepsonia</i> is characterized by heterostylous flowers that are produced in the autumn after summer drought; some flowers have long styles and short stamens; others have short styles and long stamens. The floral differences associated with heterostyly within populations in this genus are part of an incompatibility mechanism that prevents self-fertilization. Leaves appear after flowering and persist through the winter if moisture is available. Rarely, leaves and flowers are present simultaneously. All three species of <i>Jepsonia</i> also produce a secondary taproot each year. This structure begins to grow after seasonal rains and shrivels before flowering begins. It apparently acts as a contractile root. The three species in this genus are narrow allopatric endemics.</p>
|tables=
|references={{Treatment/Reference
|id=ornduff1969a
|text=Ornduff, R. 1969b. Ecology, morphology, and systematics of Jepsonia (Saxifragaceae). Brittonia 21: 286–298.
}}{{Treatment/Reference
|id=soltis1984b
|text=Soltis, D. E. 1984c. Karyotypes and relationships of species of Jepsonia (Saxifragaceae). Syst. Bot. 9: 137–141.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Caudices unbranched, ovoid to spheric; leaves 1(-3); inflorescences 1-5(-10)-flowered; hypanthia 2+ times sepals; sw California, n Baja California.
|[[Jepsonia parryi|Jepsonia parryi]]
|-id=key-0-1
|1
|Caudices branched, ovoid or flat; leaves 2-3; inflorescences (3-)4-17(-25)-flowered; hypanthia ± equaling or to 1.5 times sepals; Sierra Nevada foothills or Channel Islands
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Peduncles pink or reddish, branched near middle; petals withering; pollen bluish or cream; seeds light brown.
|[[Jepsonia heterandra|Jepsonia heterandra]]
|-id=key-0-2
|2
|Peduncles greenish or olive, branched distally; petals persistent; pollen yellowish; seeds dark brown.
|[[Jepsonia malvifolia|Jepsonia malvifolia]]
|}
</div></div><!--

-->{{#Taxon:
name=Jepsonia
|author=Debra K. Trock
|authority=Small
|rank=genus
|parent rank=family
|synonyms=
|basionyms=
|family=Saxifragaceae
|illustrator=Yevonn Wilson-Ramsey
|illustration copyright=Flora of North America Association
|distribution=Calif.;nw Mexico.
|reference=ornduff1969a;soltis1984b
|publication title=Bull. Torrey Bot. Club
|publication year=
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V8/V8_234.xml
|genus=Jepsonia
}}<!--

-->[[Category:Treatment]][[Category:Saxifragaceae]]