How to use Umbel in a sentence
The tufted head or umbel is likened by Pliny to a thyrsus.
At the base of the general umbel in umbelliferous plants a whorl of bracts often exists, called a general involucre, and at the base of the smaller umbels or umbellules there is a similar leafy whorl called an involucel or partial involucre.
When the axis is so shortened that the secondary axes arise from a common point, and spread out as radii of nearly equal length, each ending in a single flower or dividing again in a similar radiating manner, an umbel is produced, as in fig.
In Eryngium the shortening of the pedicels changes an umbel into a capitulum.
In Saxifraga umbrosa (London-pride) and in the horse-chestnut we meet with a raceme of scorpioid cymes; in sea-pink, a capitulum of contracted scorpioid cymes (often called a glomerulus); in laurustinus, a compound umbel of dichasial cymes; a scorpioid cyme of capitula in Vernonia scorpioides.Advertisement
Contracted or shortened form (Umbel), Cowslip, Astrantia.
Biparous Cyme (Dichotomous),including 3-5chotomou3 Cymes (Dichasium, Cymose Umbel, Anthela).
Plants also may have many secondary umbels produced at any node on the stem below the primary umbel.
Plants also may have many secondary umbels produced at any node on the stem below the primary umbels produced at any node on the stem below the primary umbel.
There are several hundred seeds in each flower umbel.Advertisement
Brodiaea Congesta - s the stems long and wiry, the flowers in a dense umbel; purplish-blue in color, and very lasting.
Brodiaea Grandiflora - This is an old and pretty plant, about 5 inches high, with deep purplish-blue flowers in a loose umbel in July.
Brodiaea Howelli - This pretty species has flowers in a fine umbel, bell-shaped and milky white.
Brodiaea Minor - robably a variety of the foregoing, is very pretty; the scape is not more than an inch high, about fifteen flowers in the umbel; the color purplishblue, with a lighter centre.
In D. caeruleus the stems are erect and much branched, each branch terminating in a flat umbel of small flowers, of a pleasing clear blue color, which are borne freely from August to October.Advertisement
The plants are bulbous herbs, with flat or rounded radical leaves, and a central naked or leafy stem, bearing a head or umbel of small flowers, with a spreading or bell-shaped white, pink, red, yellow or blue perianth.
It has long, narrow, flat, obscurely keeled leaves, a deciduous spathe, and a globose umbel of whitish flowers, among which are small bulbils.
The flowers are solitary in the leaf-axils as in pimpernel, money-wort, &c., or umbelled as in primrose, where the umbel is sessile, and cowslip, where it is stalked, or in racemes or spikes as in species of Lysimachia.
The plants grow from a bulb or short rhizome; the inflorescence is an apparent umbel formed of several shortened monochasial cymes and subtended by a pair of large bracts.