CUSCUTACEAE. 



Vol. III. 



ii. Cuscuta compacta Juss. Compact 

 Dodder. Love-vine. Fig. 3452. 



Cuscuta compacta Juss. ; Choisy, Mem. Soc. Gen. 9 : 



281. (. 4. f. 2. 1841. 



Plant yellowish white, stems rather stout ; flow- 

 ers about 2" long, closely sessile in dense clusters. 

 Calyx of S (rarely 4) distinct oval crenulate ob- 

 tuse sepals, subtended by 3-5 similar rhombic- 

 orbicular appressed serrulate bracts; corolla sal- 

 verform, persistent, the tube cylindric, its 5 

 (rarely 4) lobes oblong or ovate, obtuse, spread- 

 ing, much shorter than the tube, the scales nar- 

 row, one-half the length of the tube, fringed with 

 numerous long processes ; stamens included ; 

 styles slender ; capsule oblong, enveloped or 

 capped by the withering corolla. 



On shrubs, Ontario to Massachusetts, New York 

 and Alabama, west to Kansas and Texas. July-Sept. 



12. Cuscuta paradoxa Raf. Glomerate 

 or American Dodder. Fig. 3453. 



Cuscuta paradoxa Raf. Ann. Nat. 13. 1820. 

 Cuscuta glomerata Choisy, Mem. Soc. Gen. 9: 184. 

 pi. 4. f. 1. 1841. 



Plant yellowish white, stems slender ;_ flowers 

 sessile, ii" long, exceedingly numerous in dense 

 confluent clusters covering portions of the stem 

 of the host-plant. Calyx of 5 distinct concave 

 oblong obtuse serrulate sepals, subtended by 

 8-15 narrower serrulate much imbricated bracts 

 with recurved tips ; corolla tube oblong-cylin- 

 dric, its lobes oblong-lanceolate or triangular- 

 lanceolate, obtuse, spreading or recurved, per- 

 sistent ; scales copiously fringed at the summit 

 and sparingly along the sides witli numerous 

 long processes : styles 2-4 times as long as the 

 ovary; capsule capped by the withering corolla. 



On tall herbs, mainly Compositae, Ohio to South 

 Dakota, Nebraska and Texas. July-Sept. 



Family 22. POLEMONIACEAE DC. Fl. Franc. 3: 645. 1805. 



Phlox Family. 

 Herbs, some species slightly woody, with alternate or opposite entire lobed or 

 dissected leaves. Flowers perfect, corymbose-capitate, cymose or paniculate, reg- 

 ular, or nearly regular. Calyx inferior, persistent, tubular or campanulate, 5-cleft, 

 the lobes or teeth slightly imbricated. Corolla gamopetalous, funnel form, saucer- 

 shaped, campanulate or rotate, the limb 5-parted, convolute in the bud. Stamens 

 5, inserted on the tube of the corolla and alternate with its lobes ; filaments slender 

 or filiform; anthers ovate, oblong or linear, versatile, 2-celled, the sacs longitudi- 

 nally dehiscent. Ovary superior, mostly 3-celled : ovules 2-x in each cavity, 

 amphitropous ; style simple filiform; stigmas 3, linear. Capsule mostly loculi- 

 cidally 3-valved. Seeds various, sometimes winged, sometimes enveloped in muci- 

 lage and emitting spiral tubes when wetted; endosperm abundant ; embryo straight ; 

 cotyledons flat ; radicle inferior. 



About 20 genera and over 200 species, most abundant in western America. 

 Calyx distended and at length ruptured by the ripening capsule. 

 Calyx scarious between the lobes. 



Corolla salverform ; leaves opposite, entire. 



Seeds not mucilaginous when wetted ; mostly perennials with large flowers ; leaves 



opposite. i- Phlox. 



Seeds mucilaginous when wetted ; annuals ; floral leaves alternate ; flowers small. 



2. Microstcris. 

 Corolla funnelform. tubular, salverform or campanulate ; leaves alternate or opposite. 



3. Cilia. 



Calvx not scarious between the lobes ; leaves alternate, deeply cleft. 4. Leptodactylon. 



