SYNOPSIS OF THE NATURAL SYSTEM. 13S 



BO Stamens 4,— aa many as tlio sepals and petals. . . . .ij? 

 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 caly.x tube. ... 56 

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

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



53 Siigmas distinct. Leaves not punctate. ----- Cistacejb. XIX. 



53 Stamens polyadelphous. Leaves punctate. - - - Hypericaces. XX. 

 54 Leaves palmate-veinod (or compound). Fruit a samara. Aceraceje. XLII. 

 54 Leaves feather-veined, simple. Fruit a capsule. - - Saxifr-^vgace^. LXV. 



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



55 Stamens alternate v/ith the sepals. Tendrils none. Celastracea;. XLV. 

 56 Sepals, petals and stamens 00. ------ - Calycanthace*. XLIX- 



56 Sepals and petals 4, stamens 8. Fuchsia. ------ Onagrace.e. LV. 



56 Sepals and petals 5, stamens 00. Myrtace.e. L. 



57 Flowers in cymes. Large shrubs or trees. - - - Cornace^. LXIX. 



57 Flowers in spikes or fascicles. Small parasites. Loranthace^e. LXX. 

 58 Oligandrous — stamens few and definite. ... 63 

 58 Polyandrous — stamens 20 or more. ... 59 



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



59 Sepals 3, petals 6—9. ... 60 

 60 Petals imbricated in the bud. Stipules membranaceous. - Magnoliace*. II. 

 60 Petals valvate in the bud. Stipules none. ------ Anoniace^. IV. 



61 Filaments united into a tube. ------- Malvace^. XXXVII. 



61 Filaments distinct, perigynous. Rosaceje. XL VIII. 



61 Filaments distinct, hypogynous. ... 62 

 62 Leaves with stipules, dotless, cordate. Flowers small. Tiliace;e. XXXVIII. 

 62 Leaves without stipules, dotless. Flowers large. Ternstrcemiaceje. 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). . . . G8 

 64 Corolla more or less irregular. Fruit a pod (legume). Leguminos.e. XL VII. 

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



65 Climbing witiiout tendrils. Stamens 12 — 18. - - Menispermace;e. V 



65 Climbing without tendrils. Stamens 5. - - - - Celastrace*. XLV. 



65 Climbing with tendrils. Stamens 5, with a crown. PAssxPLORACEiE. LVII. 



65 Erect shrubs or trees. ... 66 



66 Stamens 4 or 5, opposite the petals. Rhamnace^. XLVI. 



66 Stamens 6, opposite the petals. ---- Berberidace*. VI. 



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



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



67 Lvs. (mostly) pinnate, dotless. Ov 1-celled, with 3 styles. Anacard. XXXIII. 



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



67 Leaves simple. Seeds 8—12. § EscallionejE. LXV. 



63 Flowers (in late autumn) 4-parted : petals linear. - - HamamelacejE. LXVI. 

 68 Flowers (in June) 4-parted : petals lanceolate. - . - Cornace.e. LXIX. 

 68 Flowers 5-parted. Styles 2. --------- GrossulacejE. LX. 



68 Flowers 5-parted. Styles 5. -------- - ARALi.\cEiE. LXVIII. 



§ 3. Orders of the Mouopetalous Exogeus. 



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



69 Stamens 6 — 12, — more numerous than 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. ----- Cucurbitace*:. LIX. 

 74 Flowers irregular. Tendrils none. LoBELiACEiE. LXXVI 



