rayless

Lacking rays.

Lacking light.

Without rays or radiance; unillumined; lightless; dark; somber; gloomy.

In botany and zoology, having no rays or ray-like parts.

Destitute of rays; hence, dark; not illuminated; blind

Lacking rays

Lightless, gloomy

Lacking florets

having no parts resembling rays; not having ray flowers