414 NATURAL HISTORY OF PLANTS. 



very short ; anthers muticous or shortly apiculate. Hypogynous 

 glands 4, free, often contiguous. 1 Germen sessile ; ovules 2, ortho- 

 tropous or suborthotropous collaterally ascending ; micropyle inferior 

 style erect ; apex clavate stigmatiferous. Follicle woody-coriaceous 

 compressed smooth, 1-locular. Seeds 2, much compressed oblong ; 

 completely surrounded by their membranous wing ; embryo central ; 

 radicle inferior. — Trees or shrubs ; leaves opposite, sometimes simple 

 (rarely entire), sometimes imparipinnate ; flowers in axillary or 

 terminal, solitary or axillary racemes ; pedicels paired in axil of each 

 bract, free or semiconnate {Central and Cis-andine South America 2 ). 



18. Andripetalum Schott. 3 — Flowers regular, hermaphrodite; 

 perianth-leaves finally revolute deciduous. Stamens 4. Hypogynous 

 scales 4, free or connate into a 4-toothed urceolus. Germen subses- 

 sile ; ovules 2, descending suborthotropous ;* style slender, slightly 

 thickened at apex. Drupe nearly juiceless, 1 -seeded indehiscent. 

 Seed exalbuminous ; embryo "fleshy ; radicle inferior. — Trees ; leaves 

 alternate or opposite, simple ; floral racemes terminal or axillary, 

 simple or more rarely slightly branched {Tropical America? Australia 6 ). 



19. Guevina Mot-. 7 — Flowers slightl}- irregular, hermaphrodite. 

 Perianth inserted obliquely, deciduous ; leaves antheriferous at con- 

 cave dilated apex, dissimilar ; 1 erect, 3 revolute. Stamens 4, 

 shortly apiculate. Hypogynous glands 2, anterior. Germen sub- 

 sessile ; ovules 2, orthotropous collaterally descending ; style erect 



1 Trigonous pollen-grains with papillose angles 4 Whereby this genus is especially distin- 

 oceur in JR. serrata, heterophylla, rhombi- guished from HeHcia. 



folia. (H. Mohl., in Ann. Sc Nat., ser. 2, iii. s Species 8-10. H. B. K., Nov. Gen. et 



314.) Spec., ii. 154, t. 121 {Rhopala).—\. Rich., in 



2 Species about 35, of which 1 is Mexican. Mem. Soc. Hist. Nat. Par., i. 106 (Roupala). — 

 R. & Pav., Fl. Per., t. 98, 99 [Embothrium). — Kl.. in Linntea, xv. 5:S : xx. 471. — Meissn., in 

 H. B. K., Nov. Gen. et Spec, ii. 152, t, 118- Mart. Fl. Bras., Prot., 77. 



120.— Pohl., PI. Bras., i. 106, t. 86, 88, 90.— 6 Several species hitherto described under He- 



Pcepp. & Endl., Nov. Gen. et Spec, ii. 35, licia, among which will come the Macadamias 



t. 149. — Kl., in Linncea, xv. 54; xx. 173; in (P. Mr ill., in Trans. Phil. List. Vict., ii. 72; 



Hook. Journ., iv. 326. — Mobio., PL Nouv. Fragm., vi. 191, under Helicia); Fl. Ami., v. 



Amer., 172, t. 100. — Meissn., in Mart. Fl. 406.— See H. Bu„ in Adansonia, ix. 258. 



Bras., Prot., 79, t. 31-33. One New Caledonian J ChiL, 198; ed. 2, 279. — J., Gen., 424.— 



species is described, JR. Vieillardii Bn. & Gr., B. Br., in Trans. Linn. Soc, x. 48, 165 — 



in Ann. Sc Nat., ser. 5, i. 345. But the genus Eschsch., in M<m. Acad. Piter si., x. 281. — 



of the plant, whose fruit is yet unknown, remains Exdl., Gen., n. 2140. — MEIBSlf., Prodr., 317, 



very doubtful. 698.— Neon FKriT.i.., ChiL, iii. 46, t. 33.— 



3 Ex Endl., Gen., n. 2149 ; Suppl., iv. p. ii. Quadria It. & Pav., Prodr., 16 ; Fl. Per. et 

 82. — Meissn., Prodr., 345, 698. — Andria- ChiL, i. 63, t. 99, fig. b.— G.ertn. f.. Fruct., iii. 

 petalum Pohl., PL Bras., i. 114, t. 91, 92.— 220, t. 220.— Avellana G.ertn. f., loc cit. 



? Panopsis Salisb. (ex. Meissn.). 



