ROSACEA. 461 



extensive. Seeds 1, 2, in eacli cell, erect winged exalbuminous (of 

 Quillaja). — A tree ; leaves alternate simple serrate, on long petioles ; 

 stipules minute ; flowers terminal racemose-cymose. {Mccvico.) See 

 p. 386. 



34. Lindleya H. B. K. — Flowers hermaphrodite ; receptacle tur- 

 binate lined by a glandular disk. Sepals 5 and petals 5 alter- 

 nate imbricated. Stamens up to 20 (of Kagenedda). Carpels 

 alternipetalous 5, connate into a 5 -celled ovary ; cells 2-ovulate ; 

 ovules collaterally descending ; micropyle superior extrorse ob- 

 turated ; styles 5 ; apex unequally dilated stigmatiferous. Capsule 

 woody 5-celled loculicidal. Seeds descending compressed exal- 

 buminous ; embryo fleshy ; radicle superior. — An evergreen tree ; 

 leaves alternate simple petiolate crenulate ; stipules subulate ; flowers 

 terminal, solitary or more rarely few. {Mexico.) See p. 387. 



35. Exochorda Lindl. — Flowers polygamo-dioecious ; receptacle 

 turbinate constricted more or less above the middle. Disk perianth 

 and 15-20 stamens of Lindleya. Carpels in male flower or minute, 

 in female united into a 5-celled ovary ; styles free ; apex dilated stig- 

 matiferous ; ovules 2, descending obturated (of Lindleya). Capsule 

 naked 5-celled ; cells tapering, rather prominently winged at base, 

 finally free, much compressed, splitting in two loculicidally, ], 2- 

 seeded. Seeds much compressed winged. Leaves alternate simple 

 membranous exstipulate ; flowers vernal, axillary or terminal, race- 

 mose ; pedicels 2-bracteolate. {North CJiina.) See p. 388. 



36 ? Pterostemon Schauer. — Flowers hermaphrodite ; receptacle 

 turbinate. Sepals 5, valvate. Petals 5, finally reflexed; prjefloration 

 imbricated. Stamens 10, perigynous, 5 oppositipetalous linear, 5 

 alternipetalous, with dilated 3-tootlied filaments; middle tooth 

 antheriferous ; anthers cuspidate, dehiscing by 2 introrse clefts. 

 Ovary 5-celled adnate to base of receptacle ; style 5-fid ; apex trun- 

 cate stigmatiferous ; ovules 4-6 in each cell, ventral ascending. 

 Fruit capsular 1-few-seeded, bearing persistent receptacle perianth 

 and staminal filaments. Seed erect ; embryo exalbuminous ; radicle 

 inferior. — A shrub, very branching dichotomous ; leaves alternate 

 petiolate simple coriaceous ; stipules minute ; flowers in small 

 corymbose cymes. {Mexico.) See p. 389. 



