The whole plant when fresh is white, except the umbo and the scales of the cap, but in drying it assumes a dull reddish or smoky-red color.
UMBO (boss of a shield), applied to the central elevation of the cap of some mushrooms.
Commonly the margins of the =Caps= are striated, sometimes they are smooth as a cymbal, and not unlike one, have a raised place or umbo in the center.
Readily known by its extremely tall stem, shaggy cap, distinct umbo and the channel between the gills and stem.
When very young the cap is slightly convex and often adorned with a slight umbo in its center.
The umbo is not always present and is generally small.
The centre or umbo is darker colored; flesh dry, tough and white.
The umbo is situated at the angle, and therefore nearly central.
Rostral Latera, small, gradually widening from the umbo to the opposite end, which is obliquely rounded.
The umbo is situated in the middle of the occludent margin, instead of at the rostral angle, as in the foregoing genera.
The freely-projecting umbo is about one sixth part of the entire length of the valve.
Scuta with a prominent ridge extending, from the umbo to the apex, close to the occludent margin; fork of the carina with the prongs diverging at an angle of from 135 deg.
The heel or umbo is either angular and prominent, or rounded.
The umbo is seated at the uppermost point, and, therefore, the main growth is downwards.
A ridge, generally runs from the umbo to the upper point.
The umbo projects a little over the scutal margin of the terga.
Sub-carina, with the inner surface crescent-shaped; the umbo points transversely outwards; in width it exceeds the largest of the latera.
Scuta, with the occludent margin rounded and protuberant to a variable degree, but always leaving a rather wide space between the margin, and the ridge which runs from the umbo to the apex; apex pointed.
The part above the umbo is formed by the upward production of a marginal slip along each side of the valve, which slips in the fossil species (C in the woodcut, fig.
The =pileus= is oval to convex and expanded, sometimes with a slight umbo or elevation at the center.
The color is tawny or light yellowish with intermediate shades, darker on the umbo and becoming darker in age, sometimes umber colored, and stained with black, especially after rains where the spores are washed on the pileus.
The umbo may have the form of a sharp elevation at the center, or it may be rounded or obtuse, occupying a larger part of the disc.
The =pileus= becomes convex, and expanded or nearly flat, and often with an elevation or umbo in the center.
Between the thigh-bones lay the iron umbo of a shield, which had been fastened by studs of iron, four of which were found near it, the face and reverse of one being represented at (c.
Hinge more or less rounded, with distant umbones; both valves convex; with the umbo of the largest rostrated and deltoid, with a hollow.
Inequivalve, irregular, thick, foliaceous, attached by the umbo of the lower and larger valve.
This formed a grasp for the left hand by which the shield was carried, the umbo protecting the hand from injury.
The shield was of metal and circular, with a central projecting boss or umbo similar to that of the Saxons.
To strengthen it, radiating strips of iron or bronze were occasionally carried from the umbo to the edges of the shield, the simplest being a prolongation of the grip.
The muscular scars and the pallial line are distinctly seen on the inner surface, and a peculiar curved shelly plate projects from under the umbo of each valve.
The umbo was of thin iron, arched in the centre, and attached to the shield by large studs or sometimes small nails (No.
Many plants have a marked umbo on the top of the cap and the rim of the cap may be slightly turned up.
The very tall, slender stem with a bulbous base, the very peculiar spotted cap with the prominent dark colored umbo and the movable ring on the stem, are ear-marks sufficient to identify this species.
Umbonata, having an umbo or conical projection like the boss of a shield.
In some plants a slight umbo is developed at the center.
The central umbo is surrounded with a series of rings of bronze set with small studs, and the two pins seen on the inner side have perhaps secured a strap for suspending it to the neck of the wearer when not in use.
It is probable that many of the shields of the same period were made chiefly of wood and leather, with the central umbo of bronze; the latter being occasionally discovered alone in barrows.
An example of an iron umbo found in Morayshire is figured on a subsequent page.
It is shewn in the annexed woodcut, and will be at once recognised by the archæologist as the umbo which formed the centre of the shield, and received and protected the hand of its wearer.
With a terminal umbo the margin of the apophysis is free and may be rounded (fig.
With the dorsal umbo all sides of the apophysis are confined between other apophyses, and any extension is a dorsal thickening of the apophysis or a dorsal protuberance.
The distinctions of umbo and seed have disappeared.
The exposed part of the scale of the conelet is the umbo of the ripe cone, a small definite area representing the earlier part of the biennial growth of the cone.
A true terminal umbo rests on the surface of the underlying scale, although several species with terminal umbos show the first stages of the dorsal umbo.
The umbo here is invariably dorsal, the seed-wing invariably articulate.
With the terminal umbo the protuberance lengthens the scale, with the dorsal umbo it thickens the scale.
With the terminal umbo the growth of both surfaces is uniform, with the dorsal umbo the growth is unequal.
The position of the umbo on the apophysis is the basis of Koehne's subdivision of the section Haploxylon.
The two positions of the umbo result from the relative growth of the dorsal and ventral surfaces of the cone-scale.
In an example from the cemetery at Linton Heath, Cambridgeshire, the leather covering seemed to have been stretched over the iron umbo as well as over the wooden surface of the shield[126].
In the Wilbraham Cemetery was found the umbo of a shield to which the handle was still attached by its rivets.
It is by the position of the umbo in the grave that this fact has been exactly ascertained.
As we have seen from the above passage of Anna Comnena, the old Northern fashion of the boss or umbo was still occasionally retained; but such an adjunct to a horseman's target seems rather for ornament than use.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "umbo" in a variety of sentences. We hope that you will now be able to make sentences using this word.
