What is "tubulous"

Tubulose \Tu"bu*lose`\, Tubulous \Tu"bu*lous\, a. [Cf. F. tubuleux. See Tubule.]

1. Resembling, or in the form of, a tube; longitudinally hollow; specifically (Bot.), having a hollow cylindrical corolla, often expanded or toothed at the border; as, a tubulose flower.

2. Containing, or consisting of, small tubes; specifically (Bot.), composed wholly of tubulous florets; as, a tubulous compound flower.

   Tubulous boiler, a steam boiler composed chiefly of tubes containing water and surrounded by flame and hot gases; -- sometimes distinguished from tubular boiler.

a. 1 Shaped like a tube; tubular. 2 # (context botany English) Having a hollow cylindrical corolla, often expanded or toothed at the border. 3 Constructed of, or containing tubular parts. 4 # (context botany English) Composed wholly of tubular florets.