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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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Annual, [perennial herb, subshrub, few epiphytes], glabrous [(hairy)]; roots fibrous [rhizomatous to tuberous]. Stem: watery to fleshy. Leaf: generally alternate, simple, petioled, toothed or entire, veins pinnate, ± arched. Inflorescence: cyme, umbel-like, terminal or axillary, 1–8-flowered. Flower: bisexual, bilateral, twisting 180°; sepals 3, free, upper becoming lower, generally with nectar spur [or spur 0]; petals 3 [5, free or] ± fused in 2s; stamens 5, filaments stout, forming column around pistil, ± united at tip, shed at base, anthers united into cap over stigma; ovary 1, superior, generally 5-chambered, stigmas 1–5. Fruit: capsule, explosive [or berry-like drupe].
2 genera, ± 850 species: tropics, warm temperate; some ornamental. [Janssens et al. 2006 Syst Bot 31:171–180] —Scientific Editor: Thomas J. Rosatti.
Unabridged references: [Yuan, Y.M., Y. Song, K. Geuten, E. Rahelivololona, S. Wohlhauser, E. Fischer, E. Smets, & P. Küpfer 2004 Taxon 53:391–403; Geuten, K., Becker, A., Kaufmann, K., Caris, P., Janssens, S., Viaene, T., Theissen, G., & Smets, E. 2006. Petaloidy and petal identity MADS-box genes in the balsaminoid genera Impatiens and Marcgravia. Plant J. 47:501–518; Janssens, S., Geuten, K., Yuan, Y. M., Song, Y., Küpfer, P., & Smets, E. 2006. Phylogenetics of Impatiens and Hydrocera (Balsaminaceae) using chloroplast atpB-rbcL spacer sequences. Syst. Bot. 31:171–180.]
Stem: lower generally with adventitious roots. Leaf: alternate, opposite, or whorled; stipules 0 or gland-like. Flower: variously spotted or lined; sepals 3, lateral 2 greatly reduced, ± green, lower with nectar spur, not green; petals apparently 3, lateral 2 forming a lip, upper 1 a banner over mouth of tube. Fruit: green. Seed: 1–7, green to black, ridged or papillate.Key to Impatiens
± 850 species: tropics, warm temperate, Eurasia, Africa, boreal America. (Latin: impatient, from explosive fruit) [Zika 2006 Novon 16:443–448]
Unabridged references: [Zika 2006 J Torrey Bot Soc 133:593–600; Zika, P. F. 2006. Impatiens ×pacifica (Balsaminaceae), a new hybrid jewelweed from the Pacific Northwest coast of North America. Novon 16: 443–448; Zika, P. F. 2006. The status of Impatiens capensis (Balsaminaceae) on the Pacific Northwest coast. J. Torrey Bot. Soc. 133: 593–600.]
Plant 5–10 dm. Leaf: alternate; stipules gland-like, dome-shaped, unlobed, < 1 mm; blade 2–13 cm, lanceolate to wide-ovate, acuminate, serrate. Inflorescence: 1–8(14)-flowered, axillary, terminal. Flower: white, pink, or purple, with yellow marks or not; spur ± straight, 10–20 mm, taper to spur gradual, lateral sepals 2–5 mm; self-pollinating flowers 0. Fruit: club-shaped.
2n=14. Shores, streambanks; < 1000 m. North Coast, n Central Coast, s San Francisco Bay Area, ne South Coast; Oregon; native to Himalaya Mountains. Introduced in California as ornamental. Apr–Sep [Online Interchange]
Previous taxon: Impatiens
Next taxon: Impatiens capensis
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Mar 12 2014
Citation for this treatment: [Author of taxon treatment] 2012. Impatiens, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=28954, accessed on Mar 12 2014
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© 2006 James B. Gratiot
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