Arum alpinariae (Araceae) General description: Spathe-limb interior crimson. Spadix-appendix slender-clavate, c. ½ as long as the spathe-limb. General Description Reference: Boyce, Peter Charles, 1993. The Genus ArumHabitat Reference: Boyce, Peter Charles, 1993. The Genus ArumHabitat: Juniper scrub. MiscPhenology: Flowering in June.