Rostellar i a (rostelaria)

[NL., IMG:content-2489.png:[blocks in formation] rostrate or beaked. rost ell i form (ros-tel'i-fôrm), a. [ The upper stigma is modified into an extraordinary organ, called the rostellum , which in many Orchids presents no resemblance to a true stigma. Darwin , Fertil. of Orchids by Insects, p. 4. (b) A Linnean term for the caulicle or radicle. -2. In zoöl., the fore part of the head of tapeworms or other cestoids, bearing spines or hooklets which are said to be rostellar. See cut under Cestoidea.-3. [ cap.] [NL.] In conch., same as Rostellar i a.