258 



UMBELL1FER..E. VII. TRACHYMENE. VIII. ASTROTRICHA. IX. XANTHOSIA. X. BOWLESIA. 



fy . G. Native of New Holland. Azorella ovata, Labill. nov. 

 holl. l.p. 74. t. 100. T. buxifolia, Sieb. pi. exsic. nov. holl. 

 no. 122, Leaves 4 lines long, and 3 lines broad. Umbels 

 much crowded, small, 8-10-rayed. 



Ovate-'le&ved Trachymene. Shrub. 



Cult. All the species of Trachymene will grow well in a 

 mixture of loam, peat, and sand ; and they may be increased by 

 cuttings, Under a hand-glass, or by seeds. 



VIII. ASTRO'TRICHA (from aarpov, astron, a star, and 

 rp<xe, thrix trichos, a hair ; in allusion to the starry down 



on the outside of the petals). D. C. coll. mem. 5. p. 29. t. 5. 

 and 6. prod. 4. p. 74. Bolax species, Sieb. 



LIN. SVST. Pcnldndria, Digynia. Tube of calyx ovate ; 

 limb small, hardly 5-toothed. Petals oval, acutish (f. 58. b ), 

 permanent, flat, velvety from stellate down on the outside. 

 Styles 2, filiform (f. 58. c.), not gradually thickening to the base. 

 Fruit crowned by the calycine lobules and petals; mericarps 

 ovate-oblong, contracted at the commissure ; ribs very blunt, 

 hardly prominent : of the primary ones there are 3 dorsal, and 

 2 marginal, which are more acute and not so evident : of the 

 secondary ones 4 ; vittae wanting on the back, but there are 2 

 rather prominent ones in the commissure, which are covered by 

 a spongy pellicle. Australian, branched subshrubs, having 

 the branches, petioles, under side of leaves, and umbels beset 

 with white stellate hairs. Peduncles panicled, each ending in a 

 simple, many-flowered umbel. Bracteas under the branches 

 and branchlets solitary. Leaves of involucrum few and linear. 

 Habit almost of Hennas, but the fruit is very different. It dif- 

 fers from Bolax in habit, and in the fruit not being tetragonal. 



1 A. FLOCCOSA (D. C. 1. c. t. FIG. 58. 

 5.) the whole plant is clothed with 



flocky lanuginose down ; leaves 

 ovate-lanceolate, obtuse at the 

 base, and acuminated at the apex. 

 T; . G. Native of New Holland. 

 Bolax floccoides, Sieb. exsic. 

 nov. holl. no. 258. Leaves 3-6 

 inches long and 12-15 lines 

 broad ; petioles half an inch long. 

 Floclcy Astrotricha. Shrub. 



2 A. LEDIFOLIA (D. C. 1. C. 



t. 7.) plant clothed with short 

 adpressed down ; leaves oblong- 

 linear, coriaceous, acutish at both 

 ends. *2 Gr. Native of New 

 Holland. Bolax ledifolius, Sieb. exsic. nov. holl. no. 257. 

 Leaves 20 lines long and 3 broad ; petioles 2 lines long. 



Ledum-leaved Astrotricha. Shrub. 



Cult. See Trachymene above for culture and propagation. 



IX. XANTHO'SIA (from ai/0oe, xanthos, yellow; in allu- 

 sion to the plants being clothed usually with yellow down) 

 Rudge, in Lin. trans. 1811. 5. 10. p. 361. t. 22. f. 1. Spreng. 

 in Schultes, syst. 6. p. 27. and 314. D. C. coll. mem. 5. p. 

 31. prod. 4. p. 74. Leucolae'na, R. Br. gen. rem. without a 

 description. Cruciella, Lesch. mss. 



LIN. SYST. Pentdndria, Digynia. Tube of calyx ovate, 

 compressed; Iimb5-lobed; lobes ovate, acute, coloured a little. 

 Petals stipitate, oval, cuspidate at the apex, replicate. Stamens 

 opposite the calycine lobes. Stylopodia (glands, Rudge) 2, 

 thick, villous at the tops of the mericarps. Styles 2, filiform, 

 rising from the inner bases of the Stylopodia. Fruit compressed, 

 striated ; mericarps contracted at the commissure, 7-9-ribbed : 

 ribs filiform : 2 lateral ones marginal ; channels without vittae, 

 as well as the commissure, which is very narrow. Australian 



subshrubs, usually covered with stellate hairs. Leaves alternate, 

 simple, or tripartite. Umbels variable. 



SECT. I. EUXANTHOSIA (this section is supposed to contain 

 the true species of Xanthosia, from eu, well, and Xanthosia}. 

 D. C. prod. 4. p. 74. Umbels axillary, simple, or bifid. Leaves 

 of involucrum small. 



1 X. MONTA'NA (Sieb. fl. nov. holl. exsic. no. 248.) the whole 

 plant clothed with villi : some of them starry, and others simple 

 and elongated ; leaves ternate, rarely 3-lobed ; umbels axillary, 

 nearly sessile, simple, 1 -flowered ; involucra and involucels 

 2-leaved. Jj . G. Native of New Holland, on the moun- 

 tains. X. pilosa, Rudge ; the flowers are only referrible to 

 this plant. 



Mountain Xanthosia. Shrub. 



2 X. HIRSU'TA (D. C. prod. 4. p. 74.) the whole plant clothed 

 with hairs, some of which are stellate, and others simple and elon- 

 gated ; leaves sinuated, rarely 3-lobed ; umbels axillary, pedun- 

 culate, bifid; umbellules 1 -flowered ; involucrum 2-leaved; 

 involucels 3-leaved. >j . G. Native of New Holland, near 

 Port Jackson. X. pilosa, Rudge, only in the form of the leaves. 

 Sieb. pi. exsic. nov. holl. no. 247. 



Hairy Xanthosia. Shrub. 



3 X. TRIDENTA'TA (D. C. prod. 4. p. 75.) young branches 

 strigose : adult ones glabrous ; leaves cuneated, acutely triden- 

 tate at the apex, tovnentose from starry down beneath, but gla- 

 brous in the adult state ; umbels pedunculate, axillary, bifid : 

 umbellules 1-flowered ; involucrum 2-leaved ; involucels 2-3- 

 leaved : leaves lanceolate. Tj . G. Native of New Holland, at 

 Port Jackson. Leucolae na tridentata, R. Br. mss. ex herb. 



mus. par. 



Tridentate-]eaved Xanthosia. 



Shrub. 



SECT. II. LEUCOL^NA (from XCVKOS, leucos, white, and \\atva, 

 chlaina, a garment ; in reference to the involucrum). D. C. 

 prod. 4. p. 75. Umbels terminal, 3-4-rayed. Leaves of invo- 

 lucrum large, white. 



4 X. ROTUNDIFOLIUM (D. C. prod. 4. p. 75.) branches densely 

 clothed with hairs, or rather rough from deciduous down ; leaves 

 reniformly orbicular, coarsely and acutely toothed ; umbels 3-4- 

 rayed : umbellules many-flowered ; involucra and involucels 

 3-leaved. fj . G. Native of New Holland, on the eastern 

 coast. Cruciella Candida, Lesch. in herb. Juss. Leaves of in- 

 volucrum lanceolate, hairy at the base : those of the involucels 

 broader, somewhat cordate, apiculated, glabrous. Fruit more 

 compressed in the young state. 



Round-leaved Xanthosia. Shrub. 



Cult. For culture and propagation see Trachymene, above. 



X. BOWLE'SIA (in honour of William Bowles, an Irish 

 botanist). Ruiz, et Pav. fl. per. prod. p. 44. t. 34. fl. per. 3. 

 p. 28. Spreng. umb. prod. p. 24. Lag. am. nat. 2. p. 94. 

 Rich, hydro, p. 21. t. 51. f. S. Koch, umb. p. 142. D. C. 

 coll. mem. 5. p. 31. prod. 4. p. 75. but not of Poir. 



LIN. SYST. Pent6ndria, Digynia. Tube of calyx compressedly 

 tetragonal ; limb 5-toothed. Petals elliptic, entire, acute. Fruit 

 ovate, much contracted at the raphe, turgid, rather tetragonal, 

 flattish on both sides at the back ; mericarps without vittse, 

 marked on the back by an oval impression ; with 5 obsolete ribs : 

 the 3 middle ones on the back : and the 2 lateral ones placed in 

 the commissure, which is flat. Weak, South American herbs, 

 usually scabrous from stellate down. Leaves petiolate, oppo- 

 site, simple, lobed, or toothed. Umbels simple, axillary, few- 

 flowered. This genus is allied to Spandnthe. 



1 B. PALMA'TA (Ruiz et Pav. fl. per. 3. t. 251. f. a.) plant 



