rayless

adj.

不光明的，昏暗的；

Rayless visor
Rayless Secondary Xylem of Halophytum
The structure of rayless graphs
Every rayless graph has an unfriendly partition
Rayless Secondary Xylem of Trianthema monogyna (Aizoaceae)
Toxic Constituents of Rayless Goldenrod
Stem anatomy of Amaranthaceae: rayless nature of xylem.
Antifeedants from Rayless Goldenrod and Oil of Pennyroyal: Toxic Effects for the Fall Armyworm
Outcrossing rates and allozyme variation in rayed and rayless morphs of Bidens pilosa
Quantitative method for the measurement of three benzofuran ketones in rayless goldenrod (Isocoma pluriflora) and white snakeroot (A...