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Dichasium |
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dichasium [dī′kā·zhē·əm]
(botany) A cyme producing two main axes from the primary axis or shoot. Dichasium the inflorescence in plants of the cymose type. The primary axis in dichasium ends in a single apical flower. From the two opposite axils under that flower two lateral branches develop that exceed the primary axis in height and also end in flowers, which blossom later. On each of them in turn, two more lateral branches develop that overtake them in height and end in apical flowers, which blossom still later, and the process continues. Dichasium is typical for many plants of the family Caryophyllaceae and others. Sometimes branching and growth in dichasium is disturbed somewhat and inflorescences form that outwardly do not resemble dichasium (as in so-called false whorls in plants of the family Labiatae). Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | It should be noted that, in some genera, the flowery shoots have an inflorescence that has been described (Townsend, 1993) as solitary or clustered axillary spikes (Nothosaerva Wight); solitary or fasciculate (Alternanthera); with very small hermaphrodite flowers, in few axillary flowered sessile clusters or in dichasia (Tidestromia Standley, Sanchez-del Pino & Flores Olivera, 2006); with hermaphrodite flowers, either solitary or paired in the axils of upper leaves (Polyrhabda). Solitary flowers, Stebbins (1973, 1974) pointed out, are usually derived in primitive families; as an example, the solitary flower of Zygogynum is the exception in Winteraceae, in which all other taxa have axillary cymes or dichasia. Inflorescence mostly cymose (usually a small dichasia or a much branched cymose panicle), rarely solitary or sessile (Theligonum). |
dichasia |
dicer dicer dicere Dicerorhinus Diceros Diceros Diceros bicornis Diceros bicornis Diceros simus dicerous dicers dicers dices dices dices dices with death dices with death Dicesium Hexachloroplutonate Dicetyl Dicetyl Dicetyl dicey DICF DICFS DICG DICGC Dich Dich dich- Dichapetalum dichasia dichasialdichasial dichasially dichasially dichasium dichasium Dichastic Dichelesthiidae Dichelobacter nodosus Dichenko, Mikhail Dichenko, Mikhail Petrovich Dichiarazione di Inizio Lavori Dichlamydeous Dichlamydeous dichlobenil dichlofenthion dichlofluanid dichlone dichlone Dichloralphenazone Dichloramine Dichloran Rose Bengal Chloramphenicol Dichloran-18-Glycerol agar Dichlordiphenyltrichlorethan Dichlordiphenyltrichlorethan Dichlordiphenyltrichlorethan dichloride dichloride Dichloridofluoromethane Dichloridofluoromethane | |||||||
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