SYNOPSIS OF THE NATURAL SYSTEM. 133 



50 Stamens 4, as many as -the sepals and petals. ... 57 

 50 Stamens 5, as many as the sepals and petals. ... 55 

 50 Stamens 6 100, more than the sepals and petals. ... 51 



51 Ovary free (or half-free and 4-carpelled). ... 52 



51 Ovary adherent to the calyx tube. ... 56 

 52 Stamens "perigynous. Stigmas 2 or 4. . . . 54 

 52 Stamens hypogynous. Stigmas 1 or 3. ... 53 



53 Stigmas distinct. Leaves not punctate. CISTACEJS. XIX. 



53 Stamens polyadelphous. Leaves purretate. - - - HYPERICACEJE. XX 

 54 Leaves palmate-veined (or compound). Fruit a samara. ACERACE.E. XL1J 

 54 Leaves feather- veined, simple. Fruit a capsule. - - SAXIFRAGACE. LXV 



55 Stamens opposite to the petals. Vines with tendrils. - - VITACEJE. XLI 



55 Stamens alternate with the sepals. -Tendrils none. CELASTRACE.E. XLV. 

 56 Sepals, petals and stamens 00. - - - -^fck - CALYCANTHACE.E. XLIX. 

 56 Sepals and petals 4, stamens 8. fuchsia. E&- - - - ONAGRACE^E. LV. 

 56 Sepals and petals 5, stamens 00. - - - ^ - - - - - MYRTACE^E. L. 



57 Flowers in cymes. Large shrubs or treeSH^ - - CORNACE^. LXIX. 



57 Flowers in spikes or fasc:cles. Small parasites. LORANTHACE^:. LXX. 

 58 Oligandrous stamens few and definite. ... 63 

 58 Poiyandrous stamens 20 or more. ... 59 



59 Sepals 5 (rarely more), as many as the petals. ... 61 



59 Sepals 3, petals 69 60 



60 Petals imbricated in the bud. Stipules membranaceous. - MAGNOLIACE^E. II. 

 60 Petals valvate in the bud. Stipules none. ------ ANONIACE.E. IV. 



61 Filaments united into a tube. MALVACE.E. XXXVII. 



61 Filaments distinct, perigynous. ------- ROSACE.E. XL VIII. 



61 Filaments distinct, hypogynous. ... 62 



62 Leaves with stipules, dotless, cordate. Flowers small. TIUACE^E. XXXVIII. 

 62 Leaves without stipules, dotless. Flowers large. TEUNSTRCEMIACE^E. XXXVI. 



62 Leaves without stipules, pellucid-punctate. - - - - AURANTIACE.E. XXXV 



63 Ovary free from the calyx superior. ... 64 



63 Ovary adherent to the calyx inferior. (Flowers symmetrical). ... 68 

 64 Corolla more or less irregular. Fruit a pod (legume). LEGUMINOS^E. XL VII. 

 64 Corolla regular. Fruit not leguminous. ... 65 



65 Climbing without tendrils. Stamens 12 13. - - MENISPERMACE^E. V 



65 Climbing without tendrils. Stamens 5. - - - - CELASTRACE.E. XLV. 



65 Climbing with tendrils. Stamens 5, with a crown. PASSIFLORACE.E. LVII. 



65 Erect shrubs or trees. ... 66 



66 Stamens 4 or 5, opposite the petals. -\ ------ RHAMNACE.E. XLVI. 



66 Stamens 6, opposite the petals. --------- BERBERIDACE.E. VI. 



66 Stamens 2 10, alternate with the petals if the same in number. ... 67 



67 Lvs. pinnate, punctate. Ov. separate or 2-celled. ZANTHOXYLACEJE. XXXII. 



67 Lvs. (mostly) pinnate, dotless. Ov l-celled,with 3 slyles.ANACARD. XXXIII. 



67 Leaves simple. Seeds 4 or 5. Ncmopantties. ... 81 - - - (LXXIX). 



67 Leaves simple. Seeds 8 12. ESCA^I-IONE^E. LXV. 



68 Flowers (in late autumn) 4-parted : petals linear. - - HAMAMELACE^. LXVJ. 



63 Flowers (in June) 4-parted : petals lanceolate. - - - CORNACE.E. LXIX. 



63 Flowers 5-parted. Styles 2. GROSSULACE.E. LX. 



68 Flowers 5-parted. Styles 5. ARALIACEJE. LXV1I1. 



3. Orders of the Monopetalous Exogens. 



69 Stamens as many as the lobes of the corolla. ... 70 



69 Stamens 6 12, more numerous tjian the lobes of the corolla. ... 87 



69 Stamens 2 4, fewer than the lobes of the corolla. ... 88 

 70 Flowers in dense heads (compound) surrounded by an involucre. . . 71 

 70 Flowers separate, or not furnished with an involucre. ... 72 



71 Stamens 4, distinct. DIPSACE.E. LXXIV. 



71 Stamens 5, united by the anthers. COMPOSITE. LXXV. 



72 Calyx superior adherent to the ovary. ... 73 

 72 Calyx inferior free from the ovary. ... 76 



73 Stamens cohering by the anthers. ... 74 



73 Stamens distinct. . . . 75 



74 Flowers regular. Vines with tendrils. CUCURBITACEJE. LIX 



74 Flowers irregular. Tendrils none. LOBELIACEJE. LXXVJ 



