198 Plante Lindheimeriane. 
fusca; caule simplici, succo lacteo; floribus ex axillis tuberculo- 
rum anni prioris.* 
MammMILtaria APPLANATA (n. sp.): simplex, depressa; tu- 
berculis elongato-pyramidatis subquadrangulatis apice ex 
tomento albo lanoso demum evanescente aculeiferis ; aculeis 
rectis 15—20 tenuioribus inequalibus radiantibus, singulo 
centrali robustiori erecto ; axillis nudis; floribus sordide albi- 
dis s. rubellis; ovario glabro, sepalis 8 — 13 lanceolatis; petalis 
12-18 lanceolatis mucronatis, internis versus apicem fimbri- 
ato-denticulatis; stigmatibus 5—8 stamina brevia pauca 
flavida longe excedentibus flavis; baccis elongato-clavatis ; 
seminibus subgloboso-ovatis scrobiculatis rugulosis parvis.— 
Rocky plains on the Pierdenales: flowers (in St. Louis) in 
May. Flowers forming a circle or wreath, in the larger speci- 
mens, of 1—1} inches diameter around the growth of tuber- 
cles of the same year, while the scarlet fruit is frequently still 
persistent and forms an outer circle. Plant 23 to 4} inches 
in diameter, 1 —2 inches high, with an almost level top and 
depressed vertex; in larger specimens 34, in smaller ones 
13 or 21, spiral rows of tubercles are most conspicuous. 
Radiating spines 2!—6 lines long, whitish; the 3 or 4 outer 
or lower are stouter and very light brown; the central spines 
erect, or rather somewhat inclined upwards and inwards, 
2-4 (mostly 3) lines long, light yellowish brown. The 
innermost tubercles of the preceding year appear to produce 
the inconspicuous flowers, which are from 9 to 12 lines long, 
urceolate when not fully expanded in bright sunshine. Berry 
8 to 15 lines long. 
MamMILLaRIA HEMISPH@RICA (Nn. sp.): simplex, hemisphe- 
1 It has been stated over and over again, that all the Cactacee parallele (with 
cotyledons parallel to the more or less compressed sides of the seed,) see JVisl. 
Rep. pp. 91 and 92) produce the flowers from the same year’s growth, and the Cac- 
tace contrarie (cotyledons contrary to the compressed sides of the seeds) from that 
of the last preceding or former years. In Wisl. Rep. l.c. Ihave stated that some 
Mammillarice probably formed an exception to that rule. What was a supposition 
then I have since ascertained to be the fact. These few species, however, are the 
only ones in which I have as yet observed this exception. 
