The tufted head or umbel is likened by Pliny to a thyrsus.
high, with ovate-lanceolate stalked leaves tapering at the apex, surrounding a naked stalk bearing a flat-topped umbel of small white flowers.
high, ending in an umbel of bright blue, funnel-shaped flowers.
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.
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.
- Compound umbel of Common Dill (Anethum graveolens), having a primary umbel a, and secondary umbels b, without either involucre or involucel.
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.
Contracted or shortened form (Umbel), Cowslip, Astrantia.
Compound Umbel, Hemlock and most Umbelliferae.
Biparous Cyme (Dichotomous),including 3-5chotomou3 Cymes (Dichasium, Cymose Umbel, Anthela).
Compound Umbel of Dichotomous Cymes,Laurustinus.
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.
The flower-bearing stem is tall; the flowers are borne in whorls on the axis as in arrow-head, on whorled branchlets as in water plantain or in an umbel as in Butomus (fig.
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.
Brodiaea Peduncularis - a pretty, white-flowered species, with large umbel of porcelain-white blossoms.
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.
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.
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.
The word usage examples above have been gathered from various sources to reflect current and historial usage. They do not represent the opinions of YourDictionary.com.