rachilla

(redirected from rachillae)
Also found in: Dictionary, Medical.

rachilla

[rə′kil·ə]
(botany)
The axis of a grass spikelet.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
After 10 days, normal and shees' forming fruits could be distinguished clearly and rachillae were collected from the two types of plants on the basis of the appearance of fruits.
Ten flowers/fruits were collected from the middle 1/3rd portion of the rachillae in each treatment.
Five basal, five middle and five apical rachillae were counted.
For the anatomical study, the material collected (rachillae with staminate and pistillate flowers) was fixed in FAA 70% (Kraus and Arduin, 1997).
The phylogenetic position of Carex baldensis is particularly significant because it suggests that rachillae axes in fertile utricles have evolved into complete androgynous lateral spikes (Reznicek, 1990; Starr et al., 2004).
The basal (sterile) part of the rachillae is pilose.
The basal part of the rachillae is covered with yellowish bristles.
Inflorescences interfoliar, erect to ascending, branched to one order, prophyll short, bicarinate, fibrous, hidden in leaf bases, peduncular bract prominent, rostrate, densely spiny adaxially, glabrous abaxially, peduncle densely spiny, rachis shorter than peduncle, not spiny, rachis and rachillae covered with a dense wooly-white tomentum, rachillae entirely covered by staminate flowers, these shallowly sunken in pits, pistillate flowers directly inserted at the base of rachilla or directly on main rachis in between staminate rachillae and without evident connection with them.
These species differ in the arrangement of staminate flowers on the rachillae. In A.