DODOXAEACEAE. 



225 



1. DODONAJEVA [L.] Jacq. 

 Cliaracters of the family, as given above. [In honor of Rembert Dodoena, 

 1518-1585, Dutch herbalist.] About 50 species, tropical and subtro])ical. Type 

 species: Dodonaea viscosa Jacq. 



1. Dodonaea jamaicensis D€. 

 Broom. Dogwood. (Fig; 250.) A 

 shrub, or sometimes a tree up to 20° 

 high, the slender branches nearly 

 erect, the bark rough in irregular 

 ridges. Leaves linear-oblong' to nar- 

 rowly oblanceolate, chartaceous, shin- 

 ing, pinnately veined, 2'-4' long, 3"- 

 6" wide, acute or acuminate at the 

 apex, attenuate at base into short 

 petioles ; racemes short, few-flowered, 

 much shorter than the leaves; pedi- 

 cels slender, 2"-4" long; sepals 

 broadly ovate, green, about IV' long; 

 capsule 6"-8''' broad, its wings mem- 

 branous; seeds black. [D. viscosa of 

 Lefroy, Jones, H. B. Small, Verrill 

 and Moore ; D. Burmanniana of Reade ; 

 D. viscosa var. angustifolia of Hems- 

 ley; D. angustifolia of Grisebach.] 



Common on hillsides over most of 

 the area. Native. Florida, Cuba, Ja- 

 maica. Flowers in spring and summer. 

 The largest trees seen were on the talus 

 of Abbot's ClifC, in 1912, reaching a 

 height of about 20 feet. This species is not at all characteristic of the sea-side ; 

 D. viscosa L., for which it has been mistaken, is, however, a halophyte, widely 

 distributed in the West Indies. 



Family 5. SAPINDACEAE R. Br. 



Soapberry Family. 



Trees or shrubs, with watery sap, rarely herbaceous vines. Leaves 

 alternate (opposite in one exotic genus), mostly pinnate or palmate, with- 

 out stipules. Flowers polygamo-dioecious, regiilar or slightly irregular. 

 Sepals or calyx-lobes 4 or 5, mostly imbricated. Petals 3-5. Disk fleshy. 

 Stamens 5-l5 (rarely fewer or more), generally inserted on the disk. 

 Ovary 1, 2-4-lobed or entire, 2-4-celled; ovules 1 or more in each cavity. 

 Fruit various. Seeds globose or compressed; embryo mainly convolute; 

 endosperm none. About 125 genera, including over 1,000 species, widely 

 distributed in tropical and warm regions. 



1. CARDIOSPERMUM L. 



Vines, with alternate bipinnate or decompound leaves and small axillary 

 tendril-bearing corymbe of slightly irregular polygamo-dioecious flowers. 

 Tendrils 2 to each corymb, opposite. Pedicels jointed. Sepals 4. the 2 

 exterior smaller. Petals 4, 2 larger and 2 smaller. Disk 1-sided, undulate. 

 Stamens 8; filaments unequal. Ovary 3-celled; style short, 3-cleft; ovules 1 

 in each cavity. Capsule inflated, 3-lobed. Seeds arilled at the base; cotyle- 

 dons conduplicate. [Greek, heart-seed.] About 15 species, of warm and 

 temperate regions. Type species: Cardiospermum Halicacahum L. 



16 



