EcoFlora - Isatis

Isatis
Family: Brassicaceae Mary Barkworth	FNA Gleason & Cronquist Resources Ihsan A. Al-Shehbaz in Flora of North America (vol. 7) Biennials [annuals, perennials]; not scapose; (often glaucous), glabrous or pubescent. Stems erect, often unbranched basally, paniculately branched distally. Leaves basal and cauline; petiolate or sessile; basal rosulate [or not rosulate], petiolate [rarely sessile], blade margins entire, repand, or dentate [rarely pinnately lobed]; cauline blade (base auriculate, sagittate, [or amplexicaul, rarely attenuate]), margins entire [dentate]. Racemes (corymbose, in panicles, several-flowered), considerably elongated in fruit. Fruiting pedicels reflexed, slender, (filiform, often thickened and clavate apically). Flowers: sepals erect or ascending, oblong [ovate]; petals oblanceolate [obovate, spatulate, or oblong], (equal to or longer than sepals), claw absent, (apex obtuse [subemarginate]); stamens slightly tetradynamous; filaments not dilated basally; anthers oblong [ovate], (apex obtuse or apiculate); nectar glands (6) confluent, or (4) lateral and median. Fruits siliques or silicles (samaroid), sessile, oblong, oblanceolate, elliptic, or obovate [ovate, cordate, spatulate, orbicular], 1- (or 2-)seeded, smooth, strongly angustiseptate, (prominently winged all around or distally; seed-bearing locule papery or corky, distinctly or obscurely 1-3-veined, sometimes keeled or shortly winged), glabrous or pubescent; valves and replum united; septum absent; ovules 1 (or 2) per ovary, (subapical); stigma capitate. Seeds plump, not winged, narrowly oblong; seed coat (smooth), not mucilaginous when wetted; cotyledons incumbent or accumbent. Vascular plants of NE US and adjacent Canada Sep divergent, somewhat unequal; pet yellow, narrowly obovate, exceeding the sep; short stamens flanked and subtended by a pair of confluent glands; each pair of long stamens subtended by a single gland; ovary flat, with a single locule and ovule; stigma sessile, 2-lobed; fr indehiscent and somewhat samaroid, compressed contrary to the normal position of the replum, with strongly flattened valves; seed single and median, replacing the replum; herbs, usually tall, with leafy, branching stems. 60, Eurasia, n. Afr. Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp. ©The New York Botanical Garden. All rights reserved. Used by permission.
Species within inventory project: Arizona Flora Isatis apennina Media not available Map not Available Isatis armena Media not available Map not Available Isatis costata Map not Available Isatis djurdjurae Media not available Map not Available Isatis glastifolia Map not Available Isatis glauca Media not available Map not Available Isatis gymnocarpa Map not Available Isatis iberica Media not available Map not Available Isatis kotschyana Map not Available Isatis laevigata Media not available Map not Available Isatis latisiliqua Media not available Map not Available Isatis littoralis Media not available Map not Available Isatis lusitanica Map not Available Isatis microcarpa Map not Available Isatis minima Media not available Map not Available Isatis oblongata Map not Available Isatis quadrialata Map not Available Isatis raphanifolia Map not Available Isatis sabulosa Media not available Map not Available Isatis stylophora Map not Available Isatis taurica Map not Available Isatis tinctoria Map not Available