46 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



inflorescence a secund raceme, 8 to 20-flowcreil ; pedicels very short, hardly elongat- 

 ing in age; sepals ascending; corolla 12 mm. long, cinnabar red without, yellowish 

 within; petals blunt, yellowish-margined; stamens yellow; stigmas bright green. 



Collected by Dr. 0. A. Purpus in the subalpine regions of Orizaba in 1907. 



Type U. S. National Herbarium no. 592489. 



Explanation of Plate 11.— Flowering plant. From a photograph by J. A. Purpus. 



Echeveria gigantea Rose & Purpus, sp. nov. Plates 12-14. 



Main stem short and stocky, 20 to 30 cm. long, crowned by a rosette of leaves; 

 leaves oblanceolate, sometimes 25 cm. long, 15 cm. broad at widest point, tapering 

 below into a thick fleshy petiole, light green, only slightly glaucous, bordered by a 

 bright red margin; flowering stems erect, sometimes nearly 2 meters long, somewhat 

 pinkish, glaucous, the longer leaves 10 to 11 cm. long; inflorescence paniculate, with 

 elongated ascending branches, often 15 to 30 cm. long; pedicels usually short (2 to 5 

 mm. long), but the earlier ones often longer; sepals very unequal, spreading and 

 remaining so after the flower fades; corolla 12 to 14 mm. long, pinkish, the lobes 

 slightly spreading at tip. 



Collected by C. A. Purpus, in the arroyos of the Cerro de la Verba, near San Luis 

 Tultitlanapa, Puebla, in 1907 (no. 414), and flowered in Washington in 1909 and again 

 in September to November of the same year. 



Type U. S. National Herbarium no. 592488. 



Explanation of Plates 12-14. — Plate 12. plant in flower. From a photograph by J . A . Purpus. Plate 

 13, a rosette viewed from above. From a photograph of a plant in the Department of Agriculture green- 

 housesat Washington. Plate 14, fruiting plant. Same data as last. 



o 



