CARYOPHYLLACEAE. 



[VOL. II. 



Family 21. 



4. Portulaca grandiflora Hook. Garden 

 Portulaca. Sun-plant. (Fig. 1437.) 



Portulaca grandiflora Hook. Bot. Mag. pi. 2885. 1829. 



Ascending or spreading, sometimes densely pilose, 

 but often with but a few scattered hairs and tufts of 

 others in the axils. Branches 6 / -i2 / long; leaves al- 

 ternate, and clustered at the ends of the branches, 

 terete, #'-i' long, about i" wide; flowers I'-a' broad, 

 pink, yellow, red, or white, very showy, open in sun- 

 shine only; sepals broad, obtuse, scarious-margined; 

 petals obovate; capsule ovoid; seeds gray, shining. 



In waste places, occasionally escaped from gardens. 

 Introduced from South America. Summer. Cultivated 

 in a large number of forms. 



1828. 



CARYOPHYLLACEAE Reichenb. Consp. 206. 



PINK FAMILY. 



Annual or perennial herbs, often swollen at the nodes, with opposite entire 

 exstipulate or stipulate leaves, and perfect or rarely dioecious regular flowers. 

 Sepals 4 or 5, persistent, separate or united into a calyx-tube. Petals equal in 

 number to the sepals or none. Stamens twice as many as the sepals or fewer, 

 hypogynous or perigynous; anthers longitudinally dehiscent. Ovary i , mainly 

 i -celled (rarely 3-5 -celled ); styles 2-5; ovules and seeds several or many i in 

 all our species), attached to a central column. Fruit generally membranous, a 

 capsule, dehiscent by valves or teeth, or an indehiscent achene or utricle. Seeds 

 mainly amphitropous; embryo more or less curved and peripheral t<> the endo- 

 sperm, rarely straight; cotyledons mainly incumbent. 



About seventy genera and about 1500 species, widely distributed, most abundant in the northern 

 hemisphere. 



9t Calyx of united sepals, tubular or ovoid. 



Calyx-ribs at least twice as many as the teeth, running both into the teeth and into the sinuses. 



Styles 5. alternate with the foliaceous calyx-teeth. i. Agrosteiinnn. 

 Styles 3-5, when 5, opposite the short calyx-teeth. 



- 5, capsule several-celled at the base. 2. 



Styles 3, rarely 4. 3. 



Styles 5, capsule i-celled to the base. 4. 

 Calyx 5-ribbed, ^-nerved, or nerveless, or striate -nerved. 

 Calyx conspicuously scarious between its green nerves. 



Calyx not bracteolate at the base. 5. 



Calyx bracteolate at the base. 6. 

 Calyx not at all scarious. 



Petals appendaged at the base of the blade. 7. 

 Petals not appendaged at the base of the blade. 



Calyx strongly 5-angled, not bracteolate. 8. Vaccaria. 



Calyx terete or nearly so, subtended by bractlets. 9. 



Calyx of distinct sepals, or the sepals united only a^ the base. 



Fruit a capsule, dehiscent by apical teeth or by valves. 

 Styles separate to the base; stipules wanting. 



Plants not fleshy; disk of the flower inconspicuous or none. 

 Petals deeply 2-cleft or 2-parted (rarely none). 



Capsule ovoid or oblong, dehiscent by valves. 10. 



Capsule cylindric, commonly curved, dehiscent by teeth. 11. 



Petals entire or eniarginate (rarely none). 

 Capsule cylindric. 

 Capsule ovoid or oblong. 



Styles as many as the sepals. 

 Styles opposite the sepals. 

 Styles alternate with tne sepals. 

 Styles fewer than the sepals. 



Seeds not appendaged by a strophiole. 

 Seeds stropniolate. 



Plants fleshy, maritime; disk conspicuous, 8-io-lobed. 

 Styles separate to the base: stipules present, scarious. 

 Styles and capsule-valves 5. 

 Styles and capsule-valves 3. 

 Styles united below; southwestern herbs with subulate leaves. 



aria. 



Silene. 



Lychnis. 



Gypsophila. 

 Tunica. 



Alsine. 

 Cerastinm. 



12. Holosleum. 



Moenchia. 

 Sagina. 



Arena r ia. 



Mnt'ln-ingia. 



Ammodfnia. 



Spergula. 



Tissa. 



Loeflingia. 



