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SAXIFRAGACEAE— ONAGRACEAE— RHAMNACEAE 



Ribes — Gooseberry, Currant 

 (The Arabic name) 

 PI. 11, fig. E : 1, 2 



1. Stems with spines or prickles or both 



a. Flowers 1-4, rarely 5 Gooseberries 



(1) Cultivated shrub, sometimes escaped; spines stout, usually in 3's 



(2) Native shrubs; spines mostly slender 



(a) Calyx lobes shorter than the tube; berries mostly bristly 



(b) Calyx lobes as long or longer than the tube; berries smooth 

 x. Calyx 9-12 mm. long, stamens long-exserted 



y. Calyx 5-7 mm. long, stamens not exceeding the calyx 



b. Flowers in elongated racemes, mostly numerous ; stems densely 



prickly 



2. Stems smooth, without spines or prickles ; flowers in racemes Cur- 



rants 



a. Calyx flat or saucer-shaped 



(1) Ovary and berries glandular bristly 



(2) Ovary and berries smooth 



x. Calyx purplish ; shrubs decumbent 



y. Calyx greenish yellow ; shrubs erect ; cultivated 



b. Calyx campanulate to long-tubular 



(1) Racemes erect or ascending, calyx white 



(2) Racemes drooping 



x. Calyx greenish white 

 y. Calyx bright yellow 



Philadelphus — Syringa, Mock Orange 



(Gr. philadelphon, a sweet flowering shrub) 

 PL 11, fig. F : 1, 2 

 Shrub 2-3 m. high, with opposite leaves and large white flowers 



R. grossuldria 



R. cynosbati 



R. grdcilc 



R. oxyacanthoides 



R. lacustre 



R. prostratum 



R. triste 



R. vulgdre 



R. hudsonidnum 



R. floridum 

 R. aureum 



P. grandiflorus 



Lythrales Loosestrife Order 



Onagraceae — Evening Primrose Family 

 Herbs with opposite or alternate leaves, sepals (usually) 4, petals 4, stamens 4 or 8, ovary 4- 

 celled ; flower syncarpous, apopetalous, epigynous. regular or somewhat irregular. 



( iaura — Gaura 



(Gr. g-auros, proud) 

 Plant gray-pubescent with scarlet somewhat irregular flowers G. coccinea 



Aristolochiaceae — Birthwort Family 

 Herbs or shrubs with alternate or basal leaves, often aromatic; sepals 3 or 6, petals 0, stamens 

 6-many, ovary 6-celled ; flower syncarpous, apetalous, epigynous, regular. 



Asarum — Wild < ringer 



(Gr. asarou, name of a plant) 

 Aromatic herb with two basal leaves, flower dull red .-J. canadense 



Celastrales Bittersweet Order 



Rhamnaceae — Buckthorn Family 

 Shrubs or small trees, with alternate simple leaves; sepals 4-5. petals 4-5. rarely none, stamens 

 4-5, ovary 2-5-celled; flower syncarpous, apopetalous or apetalous, perigynous, regular. 



Rhamnus — Buckthorn 



(Gr. rhamnoB, buckthorn) 



1. Flowers usually dioecious: nutlets deeply grooved 



a. Petals present, sepals and stamens 4; cultivated R.-cathdrtica 



b. Petals lacking, sepals and stamens 5 : native R. alnifdlia 



2. Flowers perfect; nutlets smooth; cultivated R.frdngula 



