196 Plante Lindheimeriane. 
soil, on the Upper Guadaloupe. My specimens from there are 
mostly densely czspitose ; tubercles in thirteen oblique rows ; 
proliferous groove producing the buds always near its upper 
end. Flowers 2 inches long and 2 to 2} inches in diameter: 
sepals (or rather outer firmer perigonial leaves) 20-35: 
petals (inner more delicate petaloid perigonial leaves) 30-39, 
yellow (dirty yellow only when fading), reddish at the base. 
M. compacta, Engelm. in Wisliz. Rep. not. 32, from the 
mountains of Chihuahua is mentioned here only in order to 
add to the description of the plant that of the flower which I 
have had occasion to examine in the living state. — Floribus 
in vertice dense lanato centralibus; sepalis (17 — 19) lanceo- 
latis acutis integris (rufescentibus, interioribus margine fla- 
vis); petalis (28) oblongo-lanceolatis mucronatis versus 
apicem denticulatis (sulphureis) ; stigmatibus 7 —8 cuspida- 
tis flavicantibus supra stamina (sulphurea) paulo exsertis. — 
Flowers at the end of June and beginning of July (in St. 
Louis). Flower-bud dark reddish brown: flower about 15 
lines long and of the same diameter. Petals 6 lines long and 
1i lines wide. Stigmata 2 lines long, cuspidate, as in M. 
vivipara, while all other species known to me have obtuse 
stigmata. 
MAMMILLARIA RADIOSA (sp. mov.): simplex s. parce pro- 
lifera, ovata seu cylindrica ; tuberculis teretibus supra plus 
minus sulcatis apice ex tomento albo aculeatis; áculeis rec- 
tis numerosis valde inzqualibus, plurimis (20—30) radian- 
tibus tenuioribus albidis, centralibus 4 — 5 robustioribus fuscis 
s. rarius flavis, 3—4 sursum directis, singulo deflexo ; axillis 
nudis, sulco subtomentoso ; floribus (violaceis) ex axillis tuber- 
culorum hornotinorum ortis sparsis (nec centralibus) ; sepalis 
petalisque lineari-anceolatis acuminatis aristatis; sepalis 
(40—50) arachnoideo-fimbriatis, exterioribus brevioribus ad- 
pressis, interioribus longioribus recurvatis; petalis (30— —40) 
integris s. basi subciliatis patentibus; staminibus (violaceis) 
numerossimis zequalibus; stylo longe exserto; stigmatibus 
7-9 (violaceis) erectis obtusis; bacca oblonga viridi floris 
