ANALYSIS OF THE NATUKAL OKDEU8. 193 



h Stamens 5, alternate with the 5 petals. Seeds 00. LrxACE.«. 30 



h Stamens 5, opposite to the 5 petals. Seed 1. Order. 80 



h Stamens 10, the filaments united at the base. Oxalidace^e. 32 



h Stamens 6 — 24 (twice as many as the petals), distinct. Crassulaci:^. 60 

 i Ovary one-celled. Leaves radical, irritable. Droserace-e. 19 



i Ovary 2 — 5-celled.— Leaves dotless, mostly radical. Order. 73 



— Leaves dotted. Cauline, pinnate. Rctace^e. 37 



j Styles 5 or more. Ovary 1-celled, half-adherent. Sepals 2. Portulacace^e. 22 

 j Style 1, carpels as many as the petals (2 — 6). Onagrace.e. 52 



j Styles 2, carpels 2, fewer than the (5) pHtols. Seeds several. SaxefragacejE. 61 

 j Styles 2, carpels 2, fewer than the (5) petals. Seeds two. Umbelifeh/e. 63 



j Styles 3 — 5, ovary 3 — 5-celled, 3 — 5-seeded. Araliace^e. 64 



k Ovaries many, or few, rarely 1, always simple. Kanunculace^e. 1 



k Ovary compound, 3-carpeled, open before ripe. Eesedace^e. 15 



1 Sepals 2. Petals 4 (2 pairs). Stam. 6. Spurs 1 — 2, blunt. Fumariacezj. 12 

 1 Sepals 5, very unequal, Petals 3. Stam. 6 — 3. No spur. Polygalaceje. 45 

 1 Sepals 4, petals 2, all colored alike. Spur slender. Balsamixace,e. 34 



1 Sepals and petals each — 4, not very irregular. No spur. Capparii>ace«. 14 

 — 5. Stamens 8. Spur slender. Trop^eoeace^e. 35 



— 5. Stamens 5. Spur blunt or none. Vioeace<£. 16 

 —5. Stam. 10 (or more). Fr. a legume. Legumixos.-e. 46 

 m Pistils many, entirely distinct, simple. Bandxculace.s. 1 



in Pistils 3 — 5, united more or less completely. Hypericace.e. 18 



m Pistils 5 — 10, united, with sessile stigmas and many petals. Mesembryacejj. 23 

 n Pistil solitary, simple. Petals 6 — 9. Stamens 12 — 18. Berberidace^e. 6 



n Pistils 3 or more, distinct, simple. Flowers all symmetrical. CrassueacejE. 60 

 n Pistils 2, consolidated with the 5 stamens. Juice milky. Okdek. 97 



o Carpels as many as the sepals. Anthers open at the top. HelastojiacejE. 50 

 o Carpels as many as the sepals. Anthers open laterally. Oxagrace.*. 52 



o Carpels fewer than the sepals, — CD-seeded. Styles 2. Saxifragace,e. 61 

 — 1-seeded. Styles 2 or 3. Araliace.e. 64 



— 1-seeded. Style 1 (double). CornacejE. 65 

 p Style 3 cleft at the summit. Portulacace^e. 22 



p Style and stigma 1, undivided. Order. 78 



q Leaves pinnate, with interpetiolar stipules. Zygophyllace^e. 33 



q Lvs. simple, toothed or lobed. Flowers cruciform. Stamens 6. Crucifer^e. 13 



q Lvs. simple, toothed or lobed. Flowers 5-merous. Stamens 10. Geraxiace^e. 31 

 q Leaves simple, entire, (qq) 



qq Petals and stamens on the throat of the calyx. Lythrace^:. 51 



qq Pet. hypogynous. — Fls. irregular, unsym metrical. Polygaxace^e. 45 



— Fls. regular — 2 (or 3)-parted throughout. Elatixace^e. 20 



— 5-parted. — Leaves punctate. Hypericace^e. 18 



— Lvs. dotless. Caryophyllaoe^e. 21 



r Pistil a simple carpel, becoming a legume. Stamens 10— 100. Legumixos^e. 48 



r Pistil compound, — 3-carpeled. Fls. perfect. Lvs. digitate. Sapixuace^;. 41 



— 3-carpeled. Fls. monoecious. Cultivated. Begoxiace^:. 59 



— 5-ca*rpelejl. — Stipules present. Cultivated. Geraniace^;. 31 



— Stipules none. Native. Ericace^;. 73 



s Stamens on the receptacle, in several sets. Leaves dotted. HYPEKicACEiE. 18 



s Stamen on tha calyx. — Ovaries many, free, but enclosed. CalyoaxthacejE. 48 



— Ov. compound, free in the bell-shaped cal. Lythrace.*. 51 



— Ov. adherent.— Lvs. with a marginal vein. Mtrtace/E. 49 



—Lvs. with no marg. vein. Saxifragace,£. 6) 



t Petals imbricate or valvate in sestivation. (u) 



t Petals convolute.— Anthers i -celled, turned inwards. Maevace*:. 24 



—Anthers 2-cel^d, turned outwards. STEBOULiAOiA. 25 



13 



