CLETHEA 



DIAPENSIAGEM 



DIAPENSIA 599 



serrate leaves rather glaucous beneath. 

 Flowers from July to October, white, fra- 

 grant, in spiked downy-white racemes. 

 Culture dc. as above. 



C. alnifolia. — A native of the United 

 States, 3-4 ft. high. Leaves smooth, 

 wedge-shaped obovate acute, coarsely 

 toothed, AJder-like. Flowers from July 

 to September, white, in hoary racemes. 



The variety Michauxi differs very 

 little from the type ; and the plants de- 

 scribed below as paniculata, scahra, and 

 toinentosa are also very similar, and are 

 now regarded simply as varieties of C. 

 almifoUa. 



Culture dc. as above. 



C. arborea. — A beautiful shrub, 8-10 

 it. high, native of Madeira. Leaves ob- 

 long, tapering, lance-shaped, smooth, ser- 

 rate. Flowers from August to October, 

 white, in panicles. There is a dwarf 

 variety, and one with variegated leaves. 



Culture do. as above. This is a rather 

 tender plant, but grows well in the south, 

 although it has been injured here and 

 there by 10° frost. The variegated form 

 is stiU more tender than the type, and 



must be grown in greenhouses in most 

 parts of the kingdom. 



C. canescens. — A pretty Chinese and 

 Japanese shrub with elliptic acute leaves, 

 4-5 in. long, and serrate on the margins. 

 The white Hawthorn-like blossoms ap- 

 pear in July and are borne in racemes 

 6-8 in. long. 



Culture dc. as above. 



C. paniculata. — A native of Carolina, 

 3-4 ft. high. Leaves smooth, narrowly 

 cuneate lance-shaped pointed, serrate. 

 Flowers from July to October, white, 

 fragrant, in sub-terminal hoary panicles. 



Culture dc. as above. See C. alnifolia. 



C. scabra. — A native of Georgia, 3-4 

 ft. high. Leaves broadly wedge-shaped 

 obovate acute, coarsely toothed. Flowers 

 from July to October, white. 



Culture dc. as above. See C, almifoUa. 



C. toraentosa. — A Virginian shrub, 

 3-4 ft. high. Leaves wedge-shaped obo- 

 vate acute, finely toothed towards the 

 apex, whitish woolly beneath. Flowers 

 from July to October, white, in hairy 

 woolly racemes. 



Culture dc. as above. See C. almifoUa. 



LXVI. DIAPENSIACE-(E 



An order containing only 6 genera and 6 or 8 species of small prostrate tufted 

 bushes with sessile or long-stalked, narrow entire, or roundish toothed leaves. 

 Mowers hermaphrodite, regular. Calyx 5-parted. Corolla hypogynous, funnel- 

 shaped, bell-shaped, or salver-shaped, 5- lobed or parted ; lobes leathery obovate 

 or roundish, entire, erose, or lacerated. Stamens 5, epipetalous, free, or united in 

 a ring round an equal number of staminodes. Ovary free, superior, roundish, 

 3-celled. Style thick, short or long, 3-lobed. Capsule leathery, erect. 



PYXIDANTHERA.-A genus with 

 only one species : — 



P. barbulata {Diapensia barbulata). 

 Pine Barren Bea/aty. — A peculiar tiny 

 creeping evergreen about 2 in. high, native 

 of New Jersey. Leaves imbricated, 

 narrow, oblanceolate, entire, bearded at 

 the base. Flowers in early summer, white 

 or rose, solitary, sessile, numerous. 

 Corolla shortly bell-shaped. Stamens 5, 

 attached to the corolla. 



Culture amd Propagation. — This little 

 plant flourishes in moist sandy soil in the 

 rockery in sunny situations. It may be in- 

 creased by careful divisionin spring, or seeds 

 may be sown in cold frames when ripe, or 



in spring. The seedlmgs should be grown 

 on until sturdy enough for the open air. 



DIAPENSIA. — A genus consisting of 

 2 species of small smooth cushion-like or 

 tufted herbs, with solitary, erect, stalked 

 flowers at the ends of the branches. 

 Calyx 2-3 bracteate, with broadly ovate 

 obtuse sepals. CoroUa salver-shaped or 

 bell-shaped, with 5 spreading obtuse 

 lobes. Stamens 5. Staminodes none. 



D. lapponica. — A vigorous evergreen 

 1-2 in. high, native of the mountains of 

 N. Europe and Arctic America. Leaves 

 leathery, linear spoon-shaped, with some- 

 what reflexed edges. Flowers in July, 



