Opuntiec.] LXXVIII. CACTEJE. 651 
calidis orbis veteris culta. Bot. Mag. t. 2471, 2472 (Cactus).  Pfeiff. et Otto, Abbild. und Beschr. 
i. £. 24 (Opuntia). ; 
12. Opuntia, Mill. Dict. ed. 6.—Calycis tubus ultra ovarium non productus ; lobi nure- 
rosi, exteriores squam:eformes v. foliacei ovario adnati, interiores breves, plani. Petala 
numerosa, basi connata, patentia. Stamina perplurima, oc-seriata, filamentis petalis bre- 
vioribus liberis v. inter se connatis. Ovarinm exsertum, glabrum, areolatum v. pulvilli- 
gerum ; stylus cylindrieus, stamina vix superans, inferne obelavatus, superne fistulosus, 
stigmatis radiis 2-7 crassis erectis. Baeca pyriformis, glabra v. pulvilligera, late unibili- 
eata, tuberculata. Semina compressa, testa ossea, albuniine parco v. copioso ; cotyledones 
foliacez.—fFrutices v. arbores, caule basi tereti ramoso, ramis articulatis planis compressis 
globosis v. subeylindrieis tubereulatis, tuberculis tomentosis aeuleigeris, junioribus folii- 
geris, aculeis glochidiatis 2-formibus interdum tunieatis, Folia squameformia, decidua. 
Flores laterales. flavi rubri v. purpurei. 
Species ad 150 descriptee, verisimiliter inordinate multipliaatz, Àmerics tropic; et calidre incole, 
una laiissime per orbem veterem sparsa. «lp. Rep. ii. 280, 846 ; v. 821 : Ann. i. 975; ii. 686; 
ii. 896; v. 48. Bot. Mag. t. 1567, 2393, 2691, 3293, 23€1, 4942. Bot. Reg. t. 255, 1606, 1726. 
Wight [l.i &. 114. Engelm. Cact. U.S. et Mex. Bound, Surv. 1. 66 ad 78, 76. Cact.. Whipple 
JExped. t. 6 ad 24. Pfeiff. et Otto, Abbild. und. Beschr. i. t, 6, 18, 29. 
18 Pereskia, Mill. Dict.ed.6. (Peirescia, Zuccar. in Abhandl. Bayer. Akad. Wiss. ii. 
695.)—€Calycis tubus ultra ovarium non productus ; lobi numerosi, foliacei, sepe persis- 
tentes. Petala uumerosa, oo-seriata, patentia. Stamina numerosa; filamentis liberis v. 
basi petalorum adnatis iis brevioribus. Ovarium exsertum, glabrum; stylus filiformis, 
stigmatis radiis oo fasciculatis v. spiraliter aggregatis. Bacca pyriformis v. ovoidea, 
umbilicata, squamosa v. pulvilligera. Semina...; cotyledones magne, foliaceg.—Fru- 
tiees lignosi v. arbores, ramis teretibus foliiferis. Folia carnosa, sessilia v. petiolata, plana 
v. semicylindrica, venosa, axillis pulvilligeris, pulvillis armatis. Flores solitarii v. panicu- 
lati, terminales v. laterales, sessiles v. pedunculati. 
Species ad 18, Àmericse tropicse et ins. Indise occidentalis incole. DC. Prod. iv. 474. Rev. Coct, 
in Mem. Mus. xvii. £. 17-20.  Walp. Hep. ii. 865. — Bot. Mag. 1. 3478. Bot. Reg. t. 1473, 1928, 
Pfeiff. et Otto, Abbild. und Beschr. Cact. i. t. 30. 
Onpno LXXIX. FICOIDEZE. 
MzsEMBRYANTHEMEZ, Endl. Gen. 945; Lindl. Veg. Kingd. 525.  PomrUrACEE, Endl. ]. c, 946 
erelusis Trib. Portulacarieis, Calandrinieis, et gen. Portulaca. TETRAGONIACEZ, Lindl. l. c. 527, 
et CARYOPIYLLACEARUM Subordo III. Molluginem, Lindl. 1, c. 498. 
Flores hermaphroditi, rarius polygamo-dioiei v. unisexuales, regulares. Calyz 4-5- 
sepalus v. 4-5-partitus, rarius 4-5-fidus v. -lobatus, liber v. rarius ovario adnatus; lobi 
scepissime virides, herbacei, imbricati, semper in fruetu persistentes. Pefala in Mesem- 
bryanthemo plurima, colorata, in esteris v. 0, v. parva et alba. S/amina perigyna v. in 
Mollugineis nonnullis hypogyna, definita v. indefinita, dum numero sepal:s :equalia ssepius 
iisdem opposita, dum plura ;quidistantia v. in phalanges approximata ; filamonta subulata 
v. dilatata, libera v. in cupulam membranaceam connata. A4mtAere oblongg, rarius lineares, 
2.loculares, loeulis antice longitudinaliter dehiscentibus. Discus O v. annularis, non raro 
in staminodia subulata staminibus alternata productus. Ovarium swpissime liberum, 2-co- 
loculare, rarissime 1-loculare. S£yli tot quot ovarii loculi, liberi v. in unum apice fissum 
connati, sepissime subulati et intus stigmatosi.  Ovula in loculis solitaria et basilaria v. oo, 
placentis angulo interiori loeulorum adnatis inserta, amphitropa, Fructus sepius capsula 
membranacea v. chartacea, loculicide v. transverse dehiscens, rarissime achsenium v. drupa 
1-oo-pyrena, v. in coccos v. utriculos 2-5 secedens, szpissime calyce persistente minor et 
 inillo inclusus. Semina solitaria v. oc, reniformi-rotundata v. globosa v. obovoiden ; testa 
membranacea v. crustacea, non raro exsculpta; hilum laterale rarius faciale; albumen 
312 
