. The Cactaceae : descriptions and illustrations of plants of the cactus family. 208 THE CACTACEJAB. Dr. Spegazzini has described two varieties, erythranthus and thionanthus (Anal. Mus. Nae. Buenos Aires III. 4: 498. 1905) which have different-sized flowers and different- colored filaments and which suggest the probability of there being more than one species in this genus. The varieties brevispinus Haage jr. and elegans Haage jr. are in the trade. Two forms were also collected by Dr. Shafer in Argentina in 1917, both of which have flowered in the New York Botanical Garden. No. 9 has small yel
. The Cactaceae : descriptions and illustrations of plants of the cactus family. 208 THE CACTACEJAB. Dr. Spegazzini has described two varieties, erythranthus and thionanthus (Anal. Mus. Nae. Buenos Aires III. 4: 498. 1905) which have different-sized flowers and different- colored filaments and which suggest the probability of there being more than one species in this genus. The varieties brevispinus Haage jr. and elegans Haage jr. are in the trade. Two forms were also collected by Dr. Shafer in Argentina in 1917, both of which have flowered in the New York Botanical Garden. No. 9 has small yellow flowers, less than 2 cm. long, with yellow filaments and style; No. 18 has large red flowers, 4 cm. long with red filaments. Illustrations: Gartenwelt 7: 281; De Laet, Cat. Gen. f. 20; Monatsschr. Kakteenk. 7: 105; 12: 155; 16: 48; Bluhende Kakteen 1: pi. 1; Schumann, Gesamtb. Kakteen f. 68; Nachtr. 109. f. 22; Curtis's Bot. Mag. 128: pi. 7840, as Echinocactus microspermus; Monatsschr. Kak- teenk. 12: 155; 31: 59; Schumann, Gesamtb. Kakteen Nachtr. no. f. 23, as Echinocactus micros permus macrancistrus. Plate xxiii, figure 1, shows a plant collected by Dr. Shafer at Andalgala, Argentina, in 1917 (No. 9), which flowered in the New York Botan- ical Garden, January 4, 1920. Figures 220, 221, and 222 are from photographs furnished by Dr. Fig. 222.—Hickenia microsperma. 25. FRAILEA gen. nov. Plants small, globular or eylindric, with the apex rounded or depressed, usually cespitose; ribs numerous, low, divided into tubercles, these bearing small spines; flowers small, often cleistogamous, arising from the apex of the central tubercles; fruit small, spherical to ellipsoid, bearing narrow yellow scales with hair-like bristles in their axils, these forming a crest to the flower; seeds black or brown, smooth or pubescent, shining, with a triangular, deeply concave face; embryo straight (!), splitting the testa on the back of the seed in germinating; endosperm wanting;
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Keywords: ., bookauthorbrittonnathaniellord1, bookcentury1900, bookdecade1910
