- In biology, a
rachis /ˈreɪkɪs/ (from the
Ancient Gr****: ῥάχις [rhákhis], "backbone, spine") is a main axis or "shaft". In vertebrates,
rachis can refer...
-
ostrich down
feather is an
example of a
plumulaceous feather. Its
rudimentary rhachis with long
flexible barbs and
elongate barbules cannot form vanes....
- The
segmentation of the
pygidial axis (or
rhachis) and
pleura is
indiscernible or very weak. The
rhachis is
about 1⁄3 of the
pygidial width anteriorly...
- Mayotte, an
island in the
Indian Ocean.
Mollusc Specialist Group (1996). "
Rhachis comorensis". IUCN Red List of
Threatened Species. 1996: e.T19440A8892573...
- the Gr**** word
acanthos meaning "spine" and the Gr****
suffix for spine, -
rhachis. This is due to the spine-like
dermal denticles and
their subsidiary spines...
-
edges of
leaves are
rolled under toward the midrib.
Compare involute.
rhachis See rachis.
rhizodermis the root epidermis, the
outermost primary cell...
- rear of the
rhachis. The
distance between the
rhachis and the
border furrow (or post
axial length) is
about equal to 1⁄4 of the
rhachis. The pygidial...
- of 0.5–1.5 cm (0.20–0.59 in)in
length standing in the leaf axils. The
rhachis is
hairy and glandular. The
cover sheets overlap, are
hairless and only...
- stout,
sharp spines. The
family name Rachycentridae, from the Gr****
words rhachis ("spine") and
kentron ("sting"), was
inspired by
these dorsal spines. The...
-
Pachnodus curiosus Pachnodus ladiguensis Pachnodus velutinus Rhachis comorensis Rhachis sanguineus Aldabra banded snail (Rhachistia aldabrae)
Family Charopidae...
