umbel


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umbel

an inflorescence, characteristic of umbelliferous plants, in which the flowers arise from the same point in the main stem and have stalks of the same length, to give a cluster with the youngest flowers at the centre

Umbel

 

a cluster of plants whose flower scapes are all of the same length and branch out as if from the apex of a shortened main rachis. The flowers, therefore, are located much at the same level (in cherry blossoms, primroses, and masterworts). The peripheral flowers in the umbel open first, and then the inner ones blossom. Plants frequently have compound umbels, formed by small umbels with short scapes that are located in place of flowers on long rachises that branch out from the apex of the main rachis. Such small umbels are called umbellets, and the rachises on which they sit are called rays. Compound umbels are characteristic of almost all the plants of the family Umbelliferae (carrots, dill, angelica).

umbel

[′əm·bəl]
(botany)
An indeterminate inflorescence with the pedicels all arising at the top of the peduncle and radiating like umbrella ribs; there are two types, simple and compound.
References in periodicals archive ?
Umbel helps the most admired brands in sports and entertainment collect, unite and act on first-party customer data to increase engagement, revenue and fan loyalty.
Umbel most recently served as president and chief operating officer of OncoGenesis.
The larva feed on the foliage of dill, parsley, fennel, goutweed, angelica, sweet cicely and many other members of the umbels family.
And Umbel's Audience Reach Extension tool can take that data segment even further--through a partnership with marketing technology company Acxiom and with the help of its own patent-pending Digital Genome audience analysis technology, Umbel can take an advertising campaign past the scope of Facebook, Twitter, and LinkedIn's off-the-shelf retargeting capabilities.
I don't eat all of the green seeds; in the next stage, dill's tall golden-brown umbels are laden with plump seeds, waiting for us to pick and dry them for cold-weather culinary delights or to save and sow again.
2: Number of onion seeds per umbel per field versus number of honey bee umbel (flower) visits per 5-minute observation, Yolo and Sacramento counties, 2009.
These plots were established in August 2001 for a monitoring study of Huachuca water umbel (P.
Plan to save the seeds borne by the first big umbel--the stalk and duster of flowers in the shape of an umbrella--that appears on each plant, because the primary umbel will produce bigger seeds than flower dusters that appear later.
1]) and all yield parameters for which an a priori cause-effect relationship could have been previously stated, namely mass of 1000 seeds (g of dry matter), number of umbels per plant, umbel diameter (cm), average plant height (cm), total cycle length (days after sowing) and total rainfall amount throughout the plant cycle (mm).
The Partners project is conserving Cottonwood Spring for two endangered species, the Gila topminnow (Poeciliopsis occidentalis occidentalis) and Huachuca water umbel (Lilaeopsis schaffneriana recurva), along with the Huachuca springsnail (Pyrgulopsis thompsoni), a candidate species.