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1
Comparative Wood Anatomy: Systematic, Ecological, and ...
Systematic, Ecological, and Evolutionary Aspects of Dicotyledon Wood Sherwin
Carlquist. been offered earlier (Carlquist 1962a). Raylessness can occur only in
a species that is relatively specialized in having short fusiform cambial initials.
2
Atlas of Stem Anatomy in Herbs, Shrubs and Trees: Volume 2
Based on their raylessness, these species might be categorized as having a
minimal amount of paedomorphosis. Of the 183 species of the Brassicaceae for
which data is available, 157 have rays with solely upright cells or are rayless (i.e.
...
Fritz Hans Schweingruber, Annett Börner, Ernst-Detlef Schulze, 2012
3
Ecological Strategies of Xylem Evolution
The operative mechanism behind occurrence of raylessness can now be
expressed as a temporary ( or permanent, if plant size is limited and rays never
develop) sacrifice in ray tissue in favor of mechanical strength. Characteristics of
vessel ...
Sherwin John Carlquist, 1975
4
An Investigation of Paedomorphic Secondary Xylem and ...
In addition, its rayless condition probably adds additional strength, along with the
pseudoscalariform lateral wall pitting in the vessels. In conventional woods,
raylessness may weaken the wood since ray parenchyma offers less strength
than ...
Raylessness. — The tendency toward raylessness is very marked in Helenieae.
Although Barghoorn (1941) lists only a handful of rayless species from the dicots
at large, the Helenieae offer three species in which rays are completely absent: ...
During production of secondary xylem, this pattern changes very little. Thus, this
characteristic seems justifiably called a juvenile one for woods such as those of
Table 1. Raylessness — Barghoorn (1941b) has stated clearly that raylessness
in ...
Raylessness in Pentaphragma can be described in terms of secondary
woodiness or paedomorphosis. ... vessel elements in Pentaphragma is believed
related to raylessness also, because some fiber—tracheids are produced from '
potential' ...
8
The Murders in the Rue Morgue: and other tales
I knew that I had now fully recovered the use of my visual faculties — and yet it
was dark — all dark — the intense and utter raylessness of the Night that
endureth forevermore. I endeavored to shriek : and my lips and my parched
tongue moved ...
9
Edgar Allan Poe's Tales of Mystery and Imagination
I knew that I had now fully recovered the use of my visual faculties—and yet it
was dark—all dark—the intense and utter raylessness of the Night that endureth
for evermore. I endeavoured to shriek; and my lips and my parched tongue
moved ...
He means "by twilight " — as distinguished from cloudlessness on the one hand
and from raylessness on the other. To the building up of every kingdom — the
kingdom of God included — there is required something different either from the ...
Samuel Cox, Sir William Robertson Nicoll, James Moffatt, 1901
