4T 



Cacti.— Orcutt. 



4* 



scarlet, tubular, sler.der, som what ciiit- 

 ea, ami <>l> Uue with spreading, unequal, 

 petaioid sepals, so making thei flower ap- 

 parently double as in 1 ereus nagelliform- 

 is. Stamens and style red, exserted. 



DfilLLARIA HALEI Brandegee. 

 Spitose, stems 8-10, about a foot 

 high, 2-3 inches in ctiameter, straight, cov- 

 eied with dark-colored straight spines; tu- 

 bercles short, rounded, wooily in the ax- 

 ils; spines 15-25, y 2 inch long, with 3-4 of 

 the interior ones stouter and an inch long; 

 flowers an inch long, vertical from the ax- 

 ils of young tubercles, scarlet; sepals all 

 scarlet, petaloid; anthers scarlet, fila- 

 ments exserted, yellowish, stigma scarlet: 

 fruit red, clavate, y 2 inch long; seeds 

 smooth. A handsome species, seen only 

 upon Magdalena and Santa Margarita Is- 

 lands, where it is very abundant." — Bran- 

 degee Cal ac pr sr 2, 2:161, t 6. 



MAMMILLARIA FONDII Greene. 



"±< rom a iew inches to a foot high, sim- 

 ple or w.th a few oval or cyiindricaily 

 •-■J or gate 3 tranches; g. owing parts to- 

 mentose: radial spines 20-30, white, slen- 

 der; central 4 or 5, the longest more than 

 an inch in length, rigid and strongly 

 look d, ca k brown aoove the middle: 

 flowers nearly z inches long, bright scar- 



1 t. Near M. Good.i5gii, and differing 

 from it in its laige size and brilliantly 

 c > ored iar £ e flowers. The plants were 



n flower .n 1 ebruary. Ihe species comes 

 foai the SDuthwt stern part of Cedros 

 Island."— Greene Putoria 1:268 (20 Mr 

 IS 89). 



Jb ruit 20 rrm leng, 10 m in greater diam- 

 eter, greenish, I ase imbedded in wool, re- 

 nir ins of flower persistent, pulp slightly 

 acid, greenish (May 6, 1890 : seeds 0,5mm 

 in d'ameter. 



M/MMILLA^TA ROSEA NA Bndg. 



''Stems numerous irom the root, 

 spreading, curved, ascending, one-third to 



2 mm "'ong, 4 cm thick; mamillae ar- 

 range] Li quincunxial order, 15 mm apart, 

 cylindrical, 12 mm iong, white-woolly in 

 the upper axils: pulvinae finely pubscsnt; 

 rat ial spines '.-9 in number, 9-12 mm long, 

 brown o straw colored, the single cen- 

 tral spine 26 mm iong, curved, hooked at 

 the tip; flowers from the axils of the up- 

 per mami lae, 3 ' nil long; sepals and pet- 

 a"s bri hi sc rle , jrL,ed into a tube, 

 spreading at iht ir tips, in several series; 

 stamens and style scarlet; style branches 

 r >-7; fruit scarlet, pyriform. 6-8 mm long; 

 seedis black, p'tted; c:tyledons united, 

 only a depr ssed line at their tips; albu- 

 men none. — Throughout the lower eleva- 

 tions of the Cane Region and northward 

 to Calma'Ii. Th's cactus is one of the 

 most fh wv of Lower Ca iforn a. Dr. 

 Halmer collected it at La Paz and it is 

 No. 139 of the list from that place in 

 Contr. U. S. Herb. No. 3 .catalogued by 

 Mr. Pose, for whom it is appropriately 

 named. The stems pendent from rocks 

 at Comondu are sometimes 6 feet long. 

 (This species and M. Bale! of Magdalena 

 and Santa Margarita Islands have simi- 

 lar flowers, fruit and seeds. The seeds of 

 M. Halei were wrongly described as 

 smooth; they are pitted in the same man- 

 ner a,s those of this species."— Br Zoe 2:19 

 <Ap 1891). 



MAVIVT Id MIA ST5NI] IS Lodd. 



Stem columnar, 2 dm high, 5 cm diameter, 

 MoiiiciMiis at bns<3 in nge, axils naked, brilliant 

 {liven ; in ei 1 k lonicM lose, tomentum & sp uea 

 wnite; radlals very uumerous, flexible, crini- 

 foim, 4-6 c"u trnls stronger, the upper booked. 

 •'Ghqws on palms, San Luis Potosi. 

 Variety HASSELOFll g | M baeselofll Eh]. 



.- pi n<-s more numerous, all criniform. 



Variety LINKEI S | M link el Kh|. 

 Cen ral spines all hooted. 



MAMMILLARIA SETISPINA E. 



"Cactus setispinus: fasciculate and as~ 

 cenaing,, simple or branched at base, the 

 s terns about SO cm high and 3 6 cm in di- 

 ameter, densely covered with 1 emarkably 

 long ttout somes: tubercles si.ort and 

 broadly coni al, v i h axdlary wool: 

 spines white, wich black tips; ladials 10- 

 12, wide y spreading, very unequal, jO-34 

 mm long, slender and fiexuous; central 

 spines 1-4, more rig d and much longer 

 (/D5mm), the urper ones stiaight, trte 

 lowesc one ongest ard hooked ^usually 

 upwards) and often vaiiously curved and 

 twisted: fru t obo\ ate and scarlet, 10 mm 

 long: seeds black and pitted, lype, Gabb 

 15 in Herb. Mo. Bot. Gard. Rocky or 

 gravelly soil, San Julio canyon, and in 

 the vicinity of fc"an Borgia, Lower Cali- 

 fornia."— Coulter Cont U S Nat Hb 3: 106 

 (10 Je 1894). 



Subgenus CORYPHANTHA. Plants 

 globose or elongated, often robust, with 

 watery juice. Tubercles (in age) grooved 

 on the upper s'de. Flowers as in Eumam- 

 illaria, but some at the extremity of the 

 groove in the axils of young tubercles, 

 usually near the vertex of the plant. 



MAMMILLARIA ALVERSONI Hort. 



The Fox-tail cactus is of robust 

 branching habit, densely covered with 

 long stcut straight spines, usually tip- 

 ped with black or black half way down, 

 shading into red, but often pure ivory 

 white throughout. The large rose pur- 

 ple flowers are quite showy. The larg- 

 est of some fifty plants was a cluster 

 of six heads measuring 3 inches in 

 diameter and about 8 inches high. 



See radiosa. 

 MAMMILLARIA ARIZONICA Engelm. 



See radiosa 



MAMMILLARIA COMPACTA E. 



Depressed-globose, fi-10 cm diam, simple; tu- 

 bercles short-conical, erowoed, 8 mm long; ra- 

 dials 13-16, rigid, rerurved & ar>pre«sed, inter- 

 woven with adjacent chrsters, whitish or horny, 

 10-21 mm long: central erect, often wanting; 

 fls 3-3.5 cm long and broad, yellow; fruit oval, 

 green; seeds 1.4 mm long, smooth, yellow. Chi- 

 huahua. 

 MAMMILLAFJA CONOIDEA P DC. 



Ovate-conical, simple, 3.5-10 cm high, 4-7 in 

 diameter below with densely woolly vertex; 

 tubercles close, ova'e, 12 mm long, axils at first 

 woolly; radials 10-16, ashy to white, straight, 

 stout, 6-10 mm long; centrals 3-5, 10-16 mm 



