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A Grammatical Dictionary of Botanical Latin

 
Umbel, “an inflorescence in which the flower expands centripetally and their stalks radiate from a common point. (also) (obsol.) the pileus of certain Fungals” (Lindley); 'a racemose type of inflorescence with greatly abbreviated axis and elongate pedicels. In a compound umbel the branches are again umbellately branched at the summit' (Gleason 1952), 'an inflorescence in which the peduncles or pedicels of a cluster spring from the same level' (Fernald 1950), the inflorescence may be flat-topped or convex, the pedicels arising from a generally common point, as in the ribs of an umbrella; it may be seen as a highly condensed raceme:

umbella,-ae (s.f.I), abl.sg. umbella, nom. pl. umbellae, acc. pl. umbellas, dat. & abl. pl. umbellis [> L. umbella,-ae (s.f.I), dim. of umbra, a little shadow, that is, a parasol, sunshade, umbrella];

- umbella bulbilis carens, capsulifera, multiflora, irregularis, umbel lacking bulbils, capsule-bearing, many-flowered, irregular.

- spatha umbellam aequans vel paulo longior vel raro brevior, spathe equalling the umbel or a little longer or rarely shorter.

- umbella simplex, simple umbel. Stearn.

- floribus in umbellas (non in racemos) dispositis, with flowers arranged into umbels (not racemes).

- bracteae sacciformes, in media umbella stipitatae (B&H), bracts sack-shaped, stalked in the middle umbel.

partial umbel: also known as the radius,-ii (s.m.II), abl. sg. radio: a ‘ray;’ “in Umbelliferae, the partial umbel” (Stearn); see partial.

 

A work in progress, presently with preliminary A through R, and S, and with S (in part) through Z essentially completed.
Copyright © P. M. Eckel 2010-2017

 
 
 
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