prophyll


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prophyll

(ˈprəʊfɪl)
n
(Botany) one of two first leaves to appear on a lateral shoot, usually smaller than the leaves that follow
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.prophyll - a plant structure resembling a leaf
plant part, plant structure - any part of a plant or fungus
Translations
Vorblatt
References in periodicals archive ?
Each lateral spikelet emerges from the axillary bud of a bract, bearing a prophyll and a varying number of glumes arranged on an open axis (rachilla); some or all of these glumes develop an axillary flower, so some taxa have empty glumes, while in other taxa each glume carries a flower.
Two bud developmental stages (developing and mature) were characterized by their prophyll development.
Staminate inflorescence with prophyll 14 cm long, 12 cm wide; bracts 7, carinate and more or less rostrate, light-brown, 24-136 cm long, 14-16.
Inflorescences 90-123 cm long, interfoliar or infrafoliar when old; prophyll 35 cm long, 1.
The evolutionary history of the palea is more controversial; although it is in the position of an outer perianth whorl, it is adaxial and in many grasses looks very much like a prophyll.
In a group of Neotropical species, the prophyll of each renewal shoot develops into a sessile, round, clasping leaf called a pseudostipule (Duchartre, 1854b; Gonzalez, 1990).
This generally takes place as the second leaf is appearing on the primary tiller, and this apparent early appearance is due to the production of the prophyll, or rudimentary leaf (Neuteboom and Lantinga, 1989) which is usually not visible at early stages of growth in creeping bentgrass (Cattani, 2000).
There have existed a long-standing disagreement in the use of the terms achene and nutlet to refer Carex's fruits, and perigynium and utricle to refer the enclosing prophyll (Global Carex Group, 2015).
Inflorescence erect; prophyll 55 cm long, densely brown setose; peduncular bract to 95 cm long, proximal part covered with brown, 2-4 mm long bristles, these usually not persistent, and grey floccose, flattened, black spines, distal part with flattened, black, up to 5 cm long spines; peduncle to 130 cm long, 3,2 x 4,1 cm in cross section, proximal part tomentose, distal part spiny; rachis 23-38 cm long; rachillae many, to 14 cm long, proximal part 1-5 cm long, glabrous, distal part bearing the pistillate flowers, 3,5-9 cm long, covered with minute, clavate, hyaline hairs, only one pistillate flower inserted 0,2-1,5 cm from the rachis.
In addition, axillary branches were divided into prophyll (the first leaf of a lateral branch), internode, sheath, and inflorescence.
Inflorescence branching to one order, interfoliar, erect, arching or pendulous, protogynous; peduncle usually elongated, circular to oval in cross section, densely covered in indument, often heavily armed with spines; prophyll short, bicarinate, fibrous, unarmed or armed with small spines or bristles, hidden in the leaf bases; peduncular bract much exceeding the prophyll, spindle-shaped, often rostrate, splitting longitudinally along the abaxial face, persistent or eroding, usually densely tomentose, heavily armed with spines or unarmed; rachis shorter than the peduncle bearing spirally arranged rachillae, each sustented by a narrow triangular bract; rachillae ca.