60 ROCK-ROSE FAMILY. 



the bristles of the outer rows very slowly turn inwards, so that their glanr help 

 to hold the prey ! 



D. longiiolia, LOXGEK-LKAVED S. In very wet l>ogs or shallow water, 

 with Bpatulato-obloog leaves, M>me of them erect, on km;: petioles. 



D. brevifblia, SHOUT-LLAVKD S. In wet sand, only at the S. ; small; 

 scape only 2' - 5' high, few-flowered ; leaves ^horr, wedge-snaped. 

 * * Flowers rose-purple : no blade to t/ie leaf. 



D. filifblia, THRKAD-LKAVF.D S. In wet sandy soil near the coast, from 

 Plymouth, Mass., to Florida; leaves erect, thread-shaped; scape G'- 12' high, 

 from a bulb-like base ; flowers handsome, ' or more broad. 



J. DIONJEA, VENUS'S FLY-TRAP. (Named for the mother of Venus.; 

 2/ Only one species, 



D. muscipula. Grows only in sandy bogs near Wilmington, N. Car., 

 TDUt kept in conservatories as a great curiosity. (See Lessons, p. f>2, fig. 81, 

 for the leaves, and the way they catch insects !) Flowers white, borne in an 

 umbel-like cyme on a scape 1 high, in spring. 



16. CISTACE^S, ROCK-ROSE FAMILY. 



Shrubby or low herbaceous plants, with regular flowers ; a per- 

 sistent calyx of 5 sepals, two of them exterior and resembling bracts ; 

 the petals and stamens on the receptacle ; the style single or none ; 

 ovary 1-celled with 3 or 5 parietal placentae (Lessons, fig. 261), 

 bearing orthotropous ovules. Represented in greenhouse? by one 

 showy species, CiSTtrs LADANIFERUS of Europe (not common), 

 and in sandy woods and fields by the following wild plants. 



^. HELI ANTHEM UM. Petals 5, crumpled in the burl, fugacious (falling at the 

 close of the first day). Stamens and ovules many in the complete flower: 

 placentae 3. Style none or short. 



2. HUDSONIA. Petals as in the last. Calyx narrow. Stamens 9-30. Style 



slender. Ovules few. 



3. LECHKA. Petnls 3, persistent, not longer than the calyx. Stamens 3-12. 



Style none. Pod partly 3-eelied, 6-seeded. 



1. HELIANTHEMUM, FROSTWEED. (Name from Greek words 

 for sun and //Wvr, the blossoms opening only in sunshine. Popular name, 

 from crystals of ice shooting from the cracked bark at the root late in the 

 autumn.) Low, yellow-flowered, in sandy or gravelly soil. ^ 



H. Canadense, CANADIAN or COMMON F. Common, and the only one 

 .N. ; has lar>cc-oblonL r leaves hoary beneath ; flowers produced all summer, 

 some with showy corolla 1' broad and many stamens ; others small and clus- 

 tered altm^ the stem, with ineonspicuous corolla and 3-10 stamens ; the latter 

 produce small lew-seeded pods. 



H. COrymbbsum, only a'on^ the coast S., is downy all over, with smallei 

 -flowers clustered at the top of the stem, and larger ones lon^-pcduncled. 

 ^ H. Carolinianum, grows only S., is hairy, with green leaves, the lower 

 obovate and clustered ; flowers all largc-petalled and scattered, in spring. 



2. HUDSONIA. (For an English Ixrtunist, William Hudson.) Heath-like 

 5 little shrubs, ()'- \'2' lii^li, nearly confined to sandv shore-- of the ocean and 



ff Great Lakes, with minute downy leaves closely covering the branches, and 

 sma ii yellow flowers, opening in sunshine, in spring and summer. 



^H. ericoides, HKATII-LIKK II. Greenish; leaves awl-shaped ; flowers 

 pedunclcd. From New .Jersey N. 



^H. toment6sa, DOWNV H. Hoary with soft down ; leaves oblong or 

 oval and close pressed ; peduncles short or hardly any. From New Jersey tv 

 Maine and Lake Superior. 





