*arrose*

a. [ L. squarrosus (perhaps) scurfy, scabby. ] Ragged or full of loose scales or projecting parts; rough; jagged; as: (a) (Bot. & Zool.) Consisting of scales widely divaricating; having scales, small leaves, or other bodies, spreading widely from the axis on which they are crowded; -- said of a calyx or stem. (b) (Bot.) Divided into shreds or jags, raised above the plane of the leaf, and not parallel to it; -- said of a leaf. (c) (Zool.) Having scales spreading every way, or standing upright, or at right angles to the surface; -- said of a shell. [ 1913 Webster ]

Squarrose-slashed (Bot.), doubly slashed, with the smaller divisions at right angles to the others, as a leaf. Lindley. [ 1913 Webster ]