360 NATURAL HISTORY OF PLANTS. 



II. LEPTOSPERMEiE. 

 20. Leptospermum Forst. — Flowers hermaphrodite or more 

 rarely polygamous; receptacle depressed ohconical or turbinate, at base 

 covering germen aduate within. Sepals 5, marginally inserted, im- 

 bricate, often at last not contiguous. Petals 5, alternate, imbricate, 

 finally patent. Stamens oo , when adult apparently 1-seriate, shorter 

 than or subequal to petals ; filaments unequal, dilated at base ; anthers 

 small introrse, versatile ; cells parallel, longitudinally rimose. Ger- 

 men adnate to receptacle within, inferior or partly free, plane or 

 convex at vertex, radiately sulcate and glandular or impressed ; cells 

 3-5, or more rarely 6-12 (sometimes effete) ; style central, short or 

 elongate, capitate or peltate at stigmatose apex. Ovules in cells oo 

 (sometimes few), inserted on 2-lamellate short or more or less promi- 

 nent sometimes vertically 2-seriate, sometimes transverse or more or 

 less obliquely peltate placenta, horizontal or descending, sometimes 

 recurved. Capsule girt with adnate receptacle, enclosed or exserted 

 above, loculicidal. Seeds in cells 1-co (mostly sterile), either linear, 

 or cuneate-angular, in some cases naked, in others ciliate or alate at 

 margins or angles ; coat thin ; cotyledons of straight exalbuminous 

 embryo longer than radicle. — Small trees or oftener shrubs glabrous 

 or incanescent, odorous; leaves alternate exstipulate small rigid 

 pellucid-punctate, 1-3-nerved or veinless; flowers axillary or terminal, 

 solitary or 2-3-nate, sessile or shortly pedicellate ; bracts rather 

 broad, imbricate, falling before anthesis ; bracteoles smaller, sometimes 

 longer persistent. {Trop. Oceania, Australia, New Zealand.)— See 

 p. 314. 



21 ? Agonis DC — Flowers nearly of Leptospermum, stamens 10, 

 2-seriate or oo . Germen, etc., of Leptospermum; ovules in cells 2-4, 

 inserted on ascending more or less dilated placenta and suberect ; 

 micropyle inferior.- — Shrubs or small trees ; leaves alternate, oftener 

 narrow ; flowers capitate ; capitules axillary and terminal globose, 

 densely glomeruliferous; each flower 2-bracteolate. 2 (West. Aus- 

 tralia. 3 ) 



1 Prodr. Hi. 226 (sect, of Leptospcrmi).— B.H. 3 Spec, about 10. DC. Mém. Myrtac. t. 12 



Gen. 703. — Billiottia R. Br. Joum. Geogr. Sue. (L!jitiis/iermiim).—liABiLL. PL N.-Eoll. ii. 10, t. 



i. 19. 14S [Leptospermum'). — Bektol. Amcen. 29 (Lrp- 



s Query if a sect, of Leptospirmum ? In the tospermum). — G. Don, Gen. Syst. ii. 827 (Billi- 



genus remain, according to Benth. 2 sections ottia). — Lodd, Bot. Cab. t. 1219 (Fabricia). — 



(Taxaiulria, with 10 stamens ; Ataxandria, with Benth. Fl. Austral, iii. 96.— W alp. Sep, ii. 100, 



20-30 stamens). goo; v. 730 : Ann. ii. 617. 



