Sedum amecamecanum, sp. nov.

Species mexicana habitu suffruticoso, foliis oblanceolatis subacutis viridibus, inflorescentia suborbiculari, floribus pallide luteis, squamis supra pulchre aureis, facile dignoscenda.

Planta suffrutescens, glabra, 20-30 cm. alta, erecta, ramis diffusis, Caulis subtus nudus, ramis foliosis rubris. Folia altema, subconfert, patentia vel reflexa, sessilia, oblanceolata, subacuta, in calcar brevissimum obtusum producta, 1.75 cm. longa, 6 mm. lata, plana, carnosa viridia. Inflorescentia sessilis, densa, suborbicularis, circa 2.5 cm diametro, foliosa; bracteae superiores sepalis similes. Flores 1.5 cm diametro, pallide lutei. Calyx in segmenta inaequalia, linearia vel clavata, obtusa, breviter calcarata, ad imum fissus, valde carnosus viridis. Petala, late lanceolata, acuta, pallide lutea, 8 mm. longa, sepalo longissimo circiter triente longiora. Stamina lutea, petalia triente breviora. Squamae breves, quadratae, emarginatae, in parte inferiore albidae, supra aureae. Carpella erecta, staminibus sequilongae, viridescenti-lutea, in stylos aureoa abeuntia.

Sent by Dr. J. N. Rose from Washington to the Royal Horti­cultural Society under the designation "Sedum, no. 06.10." Dr. Rose informs me that it was collected at Amecameca, Mexico, by C. A Purpus, in January 1906, no. 108. It is quite distinct from any of the other species of the difficult sub-shrubby flat-leaved section of the Mexican Sedum-flora.

© American Journal of Botany, 1916