234 boraginEjE. [Boraginea. 



seeds. Albumen none or very thin. Embryo usually straight, with flat or 

 rarely folded cotyledons. — Herbs or rarely shrubs or small trees, often rough 

 with stiff hairs * arising from little tubercles. Leaves alternate, entire or 

 toothed, without stipules. Flowers usually in one-sided simple or bifid spikes 

 or racemes, or on the one-sided branches of a dichotoinous cyme, which are 

 often rolled back before the flowers expand. 



A considerable Order, dispersed over almost every part of the globe ; the arborescent or 

 shrubby genera chiefly tropical, the herbaceous ones more common in the temperate regions, 

 especially of the northern hemisphere. 

 Tree. Ovary entire. Style 2-lobed. Fruit a drupe, with four 1- 



seeded stones 1. Ehretia. 



Erect herb. Ovary entire. Style entire. Eruit dry, pyramidal, 



and separating into two 2-seeded nuts (in the Hongkong species) 2. Heliotropium. 

 Diffuse slender herb. Ovary 4-lobed. Style entire. Eruit of 4 



seed-like nuts . 3. Bothriospermum. 



1. EHRETIA, Linn. 



Calyx 5-lobed. Corolla with a long or short tube and spreading lobes. 

 Ovary entire, 4-celled, with 1 pendulous ovule in each cell. Style terminal, 

 2-lobed at the top, with truncate or capitate stigmas. Fruit a berry or drupe, 

 separable into 2 or 4. — Trees or shrubs, smooth or rough, but not hairy as 

 most Boraginece. Leaves entire or rarely serrate. Flowers usually in cymes or 

 panicles. 



A considerable tropical genus, spread over both the New and the Old World. 



1. 33. longifiora, Champ, in Kew Journ. Bot. v. 58. A glabrous tree. 

 Leaves elliptical or oblong, acuminate, 2£ to 4 in. long, on a petiole of 3 to 

 5 lines, entire, quite smooth, with few distant veins. Flowers white or pink, 

 in pedunculate cymes, shorter than the leaves. Calyx not a line long. Corolla- 

 tube near 5 lines long, enlarged upwards ; the lobes ovate, spreading, about 

 2 lines long. Stamens considerably longer. Style-lobes dilated and truncate 

 at the top. Fruit nearly globular, 3 or 4 lines diameter, sulcate and angular 

 when dry ; the bony putamen readily separating into 4, with 1 pendulous 

 seed in each quarter. 



In the Happy Valley woods and on Victoria Peak, and is also the tree which gives its name 

 to One-tree Hill, Champion. In woods at Little Hongkong, Wilford; also Wright. Not 

 known out of the island. 



The E. serrata, Roxb., planted for its shade, has not been seen wild in the island. 



2. HELIOTROPIUM, Linn. 



Calyx usually deeply 5 -cleft, rarely 5 -toothed. Corolla-tube cylindrical j 

 the limb spreading, 5-lobed. Anthers included in the tube. Style short, 

 sometimes scarcely any, with a capitate or conical stigma. Ovary entire, 4- 

 celled. Fruit dry, separable either into four 1 -seeded nuts or into 2, each one 

 2-celled and 2-seeded, which in ripening often leave between them cavities, 

 sometimes called empty cells. Seeds without albumen. — Herbs or under- 

 shrubs, usually hairy. Leaves entire or rarely toothed. Flowers usually 

 small, in unilateral spikes or dichotomous cymes. 



A considerable genus, chiefly tropical or subtropical, both in the New and the Old World, 

 with a few species extending into Europe, temperate Asia, or south Africa. 



