XXIII. PORTULACEZE. 159 
suceulenta, glabra, diffusa. Folia radicalia petiolata, caulina alterna. Flores minuti, 
brevissime pedicellati, in racemos secundos axillares terminalesque dispositi. 
Species 1, Chilensis. Walp. Rep. v. 787. 
12. wtontia, Linn. Gen. n. 101 (Leptrina, Raf. in DC. Prod. iii. 362 ?).—Sepala 2. (raris- 
sime 3), ovata, herbacea, persistentia. Petala 5, hypogyna, in corollam hinc fissam coalita. 
Stamina 3, rarius 5, ad apicem corolle tubi inserta. Ovarium liberum, 3-ovulatum ; stylus 
brevis, 3-fidus. Capsula globosa, 3-valvis. Semina suborbieulata, a latere compressa; 
embryo periphericus.—Herba annua, pusilla, glabra, Folia pleraque opposita, carnosula. 
Flores minimi, nutantes, solitarii v. breviter racemos. 
Species 1, v. auctoribus nonnullis 3, in fontibus uliginosisque regionum frigidiorum v. temperatarum 
utriusque orbis erescentes, DC. Prod. iii. 362. Walp. Rep. ii. 238: 4nn.i.321; v. 9. Eng. Bot. t. 1206. 
13. Silveea, Pilippi, Fl. Atacam. 21. t. 1 O.—Sepala 2, ovata, subplana, hyalina, per- 
sistentia. Petala (8-4?) tenuissima. Stamen l. Ovarium liberum, pauci-(2-)ovulatum ; 
stylus elongatus (apice 2-dentatusP). Utrieulus tenuissime membranaceus, indehiscens. 
Semen unicum, a latere compressum, orbiculatum, nitidum.— Herbc humiles. Folia alterna, 
Previa, crasso-carnosa. Flores ad apices ramorum cymoso-spicati, parvi, bracteis scariosis 
coloratis calyce majoribus stipati. 
Species 4 (una tantum a nobis visa), in deserto Chilensi Atacamas crescentes. 
14. Ca1yptridium, Nutt. in Torr. et Gr. Fl. Bor. Amer. i. 198.—Sepala 2, late ovata, 
subplana, persistentia. Petala (3-4?) tenuissima, in eorollam 3-dentatam calyptreformem 
coalita. Stamen 1, corolle tubo insertum. Ovarium liberum, pauciovulatum ; stylus bre- 
vissimus, 2-fidus. Capsula oblongo-linearis, hyalina, 2-valvis. Semina a latere compressa, 
orbieulata, nitida; embryo periphericus.—Herba annua, diffusa, habitu Monocosmie. 
Folia radicalia longe petiolata, caulina pauca alterna. Flores minimi, irregulariter race- 
mulosi, racemis subpanieulatis. —Corollee minute tenerrims, forma vera e speciminibus 
siccis difficillime eruenda. , 
Species 1, Californica.  Walp. Hep. v. 787. 
15. Lewisia, Pursh, Fl. Bor. Amer. ii. 308.—Sepala 6-8, late ovata, contorto-imbri- 
enta, persistentia, membranaceo-colorata, subhyalina. Petala 8-10, hypogyna, imbricata. 
Stamina co, cum petalis inserta. Ovarium liberum, oc-ovulatum ; stylus profunde 6-8- 
partitus. Capsula globosa, membranaceo-coriacea, basi transversim dehiscens, et sub-6- 
valvis. Semina reniformi-globosa v. leviter compressa; embryo periphericus.—Herba, 
rhizomate crasso, radicibus intus albis, cortice rubro. Folia subradicalia, dense csespitosa, 
linearia, carnosula. Seapi breves, l-fori, supra medium articulati, ibidem. squamis 5-7 
subulatis verticillatis bracteati. Flores speciosi. : 
Species 1, in America boreali-oecidentali crescens,  JWalp. Hep. v. 790. Hook. et Arn. Bot. 
Beech. t. 86. 
Onpo XXIV. TANARISCINEZ. 
Endl. Gen. 1038 ; Lindl. Veg. Kingd. 341; RxAvMwURIACEX, Endl. Gen. 1037 ; Lindl. Veg. 
Kingd. 407 ; FovovigRicE x, Endl. Gen. 914. 
Flores regulares, stepius hermaphroditi. Sepala b, rarius 4, libera v. basi connata, 
valde imbricata. Petala totidem, sub disco inserta, imbricata, libera v. basi in tubum 
coalita. Discus hypogynus v. leviter perigynus, lO-glandulosus, crenatus v. angulatus, 
rarius obsoletus. Stamina b-oo, disco inserta, libera v. basi varie connata.  Amnfhere 
9.-loculares, versatiles, swpius apieulatm, loculis longitudinaliter dehiscentibus. ^ Ovarium 
liberum, l-Joculare v. imperfecte septatum; placentis 3-5, e fundo ortis nune brevis- 
simis nune usque ad apicem cavitatis attingentibus, septiformibus, liberis v. dorso cum 
pariete v. ad axin inter se plus minus connatis. Styli tot quot placentw, apice stigma- 
tosi, liberi v. alte connati, v. stigmata totidem sessilia. —Ovula ad quamquam placen- 
tam 2- ,a basi erecta, anatropa, raphe ventrali, mieropyle infera. ^ Capsula dehiscens, 
