UMBELLIFERA. XXII. Pozoa. 
nent, Petals entire. Fruit prismatically tetragonal, 5-ribbed, 
crowned by the calyx, emarginate at the apex; mericarps con- 
cave and channelled on the back: lateral ribs close, nearly in 
straight lines ; commissure much contracted.—Herb. Leaves on 
long petioles, simple, cuneated, profoundly toothed at the apex, 
quintuple nerved. Umbels simple. Involucrum obsoletely lobed, 
crenately toothed, many nerved : nerves branched a little-—This 
genus is allied to Astrantia and Mulinum. 
1 P. coriacea (Lag. gen. et spec. l. c.) Y.F. Native of 
the Cordillera of Chili, in various places at Santa Madre Los 
Impossibles, and other places on the Andes of Chili between 
Mendoza and Chili. Mulinum angulatum, D. C. prod. 4. p. 86. 
Hacquétia bractedgama, D. C. prod. 4. p. 668. 
Coriaceous Pozoa. PI. 4 foot. 
N.B. There are two other species of this genus mentioned 
by Lagasca in am. nat. 2. p. 94. under the names of P. denticu- 
lata and P. incisa, but these he has not described. 
Cult. See Fragésa, p. 259. for culture and propagation. 
XXIII. ASTERI'SCIUM (from aørnp, aster, a star; in re- 
ference to the starry involucels or umbels). Cham. and Schlecht. 
in Linnea. 1. p. 254. t. 25. f. 1. D.C. prod. 4. p. 82.—Pozda, 
spec. Spreng. syst. 2. p. 116.—Cassidocarpus, Pres], in herb. 
Henke. 
Lin. syst. Pentdndria, Digynia. Calyx 5-toothed, perma- 
nent: teeth ovate. Petals ending in an inflexed point, emargi- 
nate, with the recess callous. Fruit compressed, tetragonally 
prismatic, crowned by the calyx, rounded at the base ; mericarps 
5-ribbed, 2 intermediate ribs expanded into wings, central one 
as well as the 2 placed near the raphe stripe-formed : having the 
furrows between the ribs destitute of vittee; commissure very 
narrow. Seed unknown.—Quite glabrous perennial herbs. 
Stems terete, branched, few-leaved. Leaves petiolate, simple, 
roundish-cunéated, unequally toothed, somewhat 3-lobed, 3-5- 
nerved, rather coriaceous. Umbels simple, nearly globose. In- 
volucrum many leaved, shorter than the umbel. Flowers either 
sterile and male, on long pedicels, or fertile and hermaphrodite in 
the same umbel.—This genus differs from Pozòa and Mulinum 
in the petals being emarginate, not entire. 
1 A. Curtx’nsis (Cham. et Schlecht. 1. c.) leaves 3-lobed, 
deeply serrated; peduncles elongated, scattered ; petals deeply 
emarginate, ending in a long involute point ; fruit narrowest at 
the hase ; leaves of involucrum lanceolate, cut. 4%. F. Native of 
Chili, in dry sandy places about Talcaguano, and about Concep- 
tion; Cuesta de Zapata, at the elevation of 6,000 feet ; cliffs by 
the sea side at Valparaiso. Hook. bot. misc. 1. p. 332. t. 67. 
A. Anisillo vulgo Mouchu, Feuill. chil. 3. t. 2. 
_ Var. B, He nkei (D. C. prod. 4. p. 82.) lower leaves round- 
ish, undivided, acutely few-toothed at the apex: upper leaves 
trifid. 4%. F. Native of Chili. Cassidocarpus Chilénsis, Presl, 
in herb. Heenke. Eryngium tricuspidatum, Domb. herb. 
Chili Asteriscium. Pl. 4 foot. : 
2 A. Porrrrei (D.C. prod. 4. p. 82.) leaves deeply trifid ; 
lobes obovate, obtuse, regularly toothed. 2%. F. Native of 
Chili. Very like the preceding, but differs in the lobes of the 
leaves and recesses being obtuse, and regularly toothed all 
around, 
Poeppig’s Astericium. PI. 4 foot. 
3 A. rotyce’pHatun (Gill. et Hook. in bot. mise. 1. p. 332. 
t. 67. 8,) plant leafless? peduncles corymbose, numerous, some- 
times abortive and spinose ; petals entire, acute, with an invo- 
lute apex; fruit broadly oblong; leaves of involucrum linear, 
entire. 4. F. Native of Chili, in the valleys on the Andes 
near Ladera dela Jaula, and towards Uspallata in the province 
of Mendoza, at the elevation of 7,500 feet. Mulinum Diptery- 
XXIII. Asreriscium. 
XXIV. Actinorus. XXV. PETAGNIA, 263 
gia, D.C. prod. 4. p. 80. The reflexed petals of this species 
and the next forbid their being united to Mulinum. 
Many-headed Asteriscium. Pl. 4 foot. 
4 A. isarmpica’reum (Hook. et Arn. in bot. mise. 3. p. 
352.) stem much branched; branches terete; umbels many, 
few-flowered, disposed in panicles; involucra of few leaves; 
fruit oval, parallelly biscutate ; mericarps approximate. 4%. F. 
Native of the Cordillera of Chili. Mulinum isatidicarpum, D.C. 
prod. 4. p. 80. Dipterygia isatidicárpa, Presl, mss. Umbels 
small, very numerous. Carpophore bipartite; mature mericarps 
yellow, rather cuneated at the base. 
Tsatis-fruited Asteriscium. PI. 4 foot. 
Cult. See Fragòsa, p. 259. for culture and propagation. 
Tribe III. 
SANICU'LES (this tribe contains plants agreeing with Sani- 
cula in important characters). D.C. prod. 4. p. 82. or Umbel- 
late imperféctee Orthospérme tirgide, Koch. umb. 138.—Um- 
bellatee disciscéntes, Spreng. in Schultes, syst. 6. p. 30. exclu- 
sive of 3 genera. Transverse section of fruit nearly terete, 
Mericarps covered with scales, furnished with 5 equal primary 
ribs, without any secondary ones, and destitute of vittæ. Trans- 
verse section of seed semi-terete, flattish in front. Petals erect, 
bent inwards from the middle, and emarginate. Umbels fasci- 
culate or capitate, simple or irregularly subcompound. 
XXIV. ACTINO'TUS (from axrı» axrivoc, actin actinos, a 
ray ; involucrum). Labill. nov. holl. (1804) 1. p. 67. t. 92. R. 
Br. gen. rem. p.25. D. C. prod, 4. p. 83.—Eriocalia, Smith, exot, 
bot. (1805) 2. p. 37. t. 78-79. Spreng. in Schultes, syst. 6. p. 
31. and 639. Lag. am. nat. 1821. no, 2. p. 105.—Proústia, 
Lag. in litt. 1807. but not of D. C. 
Lin. syst. Pentándria, Digynia. Tube of calyx ovate, con- 
tracted at the top; limb 5-lobed: lobes oval-oblong. Petals 
wanting. Stamens opposite the calycine lobes. Styles 2, thick- 
ened at the base and villous, but setaceous at the apex. Ova- 
rium l-ovulate. Fruit ovate, villous, marked by 5 stripes, and 
crowned by the calyx.—Erect branched Australian herbs. 
Leaves alternate, petiolate, variously cut. Umbels simple, many 
flowered, capitate ; pedicels very short; involucrum many leaved, 
radiating, longer than the flowers. 
1 A. Hexta’ntut (Labill. nov. holl. 1. p. 67. t. 92.) the whole 
plant clothed with tomentose wool; leaves bipinnatifid: lobules 
bluntish ; involucrum 10-18-leaved, clothed with soft tomentum. 
a. G. Native of New Holland, about Port Jackson, &c. 
Eriocalia major, Smith, exot. bot. t. 78. Involucrum expanded 
14 or 2 inches in diameter, yellow. Flowers white. 
Sun-flower Actinotus. Fl. June. Clit. 1821. Pl. 2 feet. 
2 A. minor (D. C. prod. 4. p. 83.) plant smoothish ; leaves 
clothed with adpressed villi beneath, ternate; segments or leaf- 
lets trifid, acute; involucrum 9-10-leaved, acute, clothed with 
silky villi. ©. H. Native of New Holland, on the Eastern coast. 
Eriocalia minor, Smith, exot. bot. t. 79. Sieb. pl. exsic. nov. 
holl. no. 127. Involucrum expanded, 5 lines in diameter, red. 
Smaller Actinotus. Pl, 1 foot. 
Cult. The seeds of these plants may be reared on a hot-bed 
in spring, and in the month of May the plants should be planted 
out in the open border in a warm situation, where they will 
flower and seed freely. 
XXV. PETA’GNIA (in honour of Vincent Petagna, a Nea- 
politan botanist, author of Institutiones Botanice, in 5 vols. 8vo. 
Naples, 1785-1787). Guss. prod. fl. sic. 1. p. 311. and in litt. 
D.C. coll. mem. v. p. 35. but not of Gmel. nor Rafin.— Hete- 
rosciadium, D, C. mss. in herb. Balb, f 
Lin. syst. Pentándria, Digýnia, Umbellules containing only 
