Spikelet Sentence Examples
They are called " huitzilin " (spikelet) by the 'Aztecs, and " colibri," " chupaflor " and " chupa-miel " (floweror honey-sucker), and " pajaromosca " (fly-bird) by the Spanish-speaking Mexicans.
Each spikelet contains a solitary flower with two outer small barren glumes, above which is a large tough, compressed, often awned, flowering glume, which partly encloses the somewhat similar pale.
The cultivated varieties are extremely numerous, some kinds being adapted for marshy land, others for growth on the hill A, spikelet (enlarged) B, bearded variety sides.
The pale is now generally considered to represent the single bracteole, characteristic of Monocotyledons, the binerved structure being the result of the pressure of the axis of the spikelet during the development of the pale, as in Iris and others.
They are commonly firm and strong, often enclose the spikelet, and are rarely provided with long points or imperfect awns.Advertisement
The axis of the spikelet is frequently jointed and breaks up into articulations above each flower.
In Cynosurus (Dog's tail) -- C the pectinate involucre which conceals the spikelet is a barren or abortive spikelet.
It is closed except at the apex, and contains the female spikelet, the stalks of the male inflorescence and the long styles emerging through the small apical orifice.
The pistil consists of a single carpel, opposite the pale in the median plane of the spikelet.
Short spikes may fall from the culm as a whole; or the axis of a spike or raceme is jointed so that one spikelet falls with each joint as in many Andropogoneae and Hordeae.Advertisement
The entire spikelet, or single flowers, are transformed into small-leaved shoots which fall from the axes and readily root in the ground.
Robert Brown suggested two primary divisions - Paniceae and Poaceae, according to the position of the most perfect flower in the spikelet; this is the upper (apparently) terminal one in the first, whilst in the second it occupies the lower position, the more imperfect ones (if any) being above it.
Munro supplemented this by another character easier of verification, and of even greater constancy, in the articulation of the pedicel in the Paniceae immediately below the glumes; whilst in Poaceae this does not occur, but the axis of the spikelet frequently articulates above the pair of empty basal glumes.
In Setaria and allied genera the spikelet is subtended by an involucre of bristles or spines which represent sterile branches of the inflorescence.
At the base of each spikelet are two empty boat-shaped glumes or "chaff-scales," one to the right, the other to the left, and then a series of flowers, 2 to 8 in number, closely crowded together; the uppermost are abortive or sterile, - indeed, in some varieties only one or two of the flowers are fertile.Advertisement
A, Spikelet magnified.
In the common wheats the chaffscales are boat-shaped, ovoid, of the consistence of parchment, and shorter than the spikelet; the seed is usually floury, opaque, white, and easily broken.
The Polish wheat, rarely if ever cultivated in the United Kingdom, has very large lanceolate glumes, longer than the spikelet, and elongated glassy seeds.
Only the middle spikelet of each triplet is fertile; the ear has therefore only two longitudinal rows of grain, and the spikes are strongly compressed laterally.