OF THE GENUS CUSCUTA. 99 
Var. a. VULGIVAGA, the common form, as described and figured in Sill. Journ. and Chois. Cuse. It is Will- 
denow’s original C, Gronovii, in his Hb. nro. 3160, a very loosely flowered specimen.— On coarse herbs and shrubs, 
commonly in moist shady places, from Canada and Maine to Florida, westward to Missouri, Arkansas, and Texas ; 
I have seen no specimens from the Rocky Mountains or from the Pacific coast. Flowers 14-14 lines long ; lobes of 
calyx usually carinate, and, like the laciniw, shorter than the very deeply campanulate tube of the corolla; scales 
mostly aed i the tube, incurved over the ovary ; corolla remaining at base of capsule. Variable in the size of 
the flowers ; a small-flowered form is C. polyantha, Shuttlew.! in Pl. Rugel from Alabama ; sometimes it occurs with 
4-parted oats var. tetrameris, Engelm. 1. ¢ 
Var. B. LATIFLORA. C. Saururi, Engelm.! 1. c. p. 336, t. 6, f 17-21: calyx more membranaceous ; laciniwe and 
stamens of equal length, as long as the shallow tube ; scales narrow and longer than the tube; in eastern specimens 
the flowers are smaller, in western sometimes larger than in var. a. — From Massachusetts to North Carolina, and 
westward to Illinois and Missouri. 
ar. y. CALYPTRATA. C. Bonariensis, H. B. Carlsr. C. Chilensis, H. B. Frib., not Ker.; similar to the first form, 
flowers even more deeply campanulate, usually glandulous, rather larger, in very loose panicles ; corolla remaining on 
top of 2 pee — Western Louisian, Gregg oe sacekgunesh cultivated in several botanical gardens in Germany. 
- 6.? curra. C. umbrosa, Hook. |. c. in part: flowers small, 1} lines long, glandulous ; calyx and short 
a aide lacinize half as fh as Ae deeply oe tube ; anthers iid coduiay scales very short, bifid 
or truncate, appressed to the tube ; styles one third or one fourth as long as the conic ovary; corolla surrounding or 
covering the upper part of the large oval capsule ; intrastylar opening lanes ; ; seeds few and large, nearly 1 line it 
Se somewhat rostrate, with a small, oblong, transverse hilum. — Northwestern America, Douglas! Fremont! 
45). — Perhaps a distinct species, taking the | lac e of C. Gronovit on the Pacific side of the continent. 
61. C. rostrata, Shuttlew.! in sched.; Engelm.! in Bost. Journ. N. H. V. 225. C. oxyca 
Engelm.! in sched. — In shady woods, on tall coarse herbs, rarely on shrubs, southern Alleghanies oe [509 (59)] 
Maryland and Virginia to South Carolina, Rugel! Buckley ! Gray & Sullivant ! Curtis !— Nearly allied 
with the last, but flowers larger and wider, Tine es long; scales comparatively small, deeply incised-fringed ; ovary 
elongated, bottle-shaped ; capsule, with the elongated 2-pointed beak, 24-3 lines long; seeds 1-4, when regularly 
‘developed 1-1} lines long, obliquely obovate, — carinate on the inside, bluntly rostrate, somewhat reticulate, 
with a short oblong-linear mostly transverse hilum 
§ 3. Lepidanche. 
Flowers pedicelled or, mostly, closely sessile; sepals free, similar to the surrounding sterile bracts, imbricate ; 
ovary and capsule more or less conic, thickened and fleshy at the apex ; withered corolla covering the capsule like a 
hood, — Lepidanche, Eng. Sill. Journ. XLIII. p. 343. 
* Flowers pedicelled, loosely paniculate. 
62. C. cusprpata, Engelm.! in Bost. Journ. N. H. V. p. 224; Bot. Zeit. 1846, p. 277. — Parasitic on Iva, Ambro- 
sia and many other herbs, on wet or dry prairies from southern and western Texas, Lindheimer ! 125 and 277, Wright ! 
Schott! Thurber! to the upper Arkansas, Trécul! Fendler! N. Mex. 659, b; Marcy! Bigelow! and to the sandhills 
of the Platte, Hayden!— A well-marked and easily recognized species ; inflorescence loosely paniculate, with many 
sterile hyaline bracts on the pedicels and at the base of the calyx ; flowers membranaceous, 14-23 (:mostly 3 lines long ; 
upper bracts and sepals ovate or orbicular, cuspidate or sometimes obtuse; ovary not globose, as I form Tibed 
it, but oval, with a thick stylopodium ; capsule thick and glandulous at the apex; seeds rarely more than 0 0.4 line Jong, 
obovate, compressed, rostrate, with a very short oval mostly transverse hilum. The form from Platte river has the 
smallest flowers, and almost orbicular sepals. 
63. C. BRACTEATA, n. sp. : caulibus tenuiter filiformibus ; cymis spiciformibus paniculatis ; pedunculis pedicel- 
e crassis bracteis pluribus ovatis obtusis, superioribus lanceolatis acutatis stipatis ; sepalis similibus longioribus 
acuminatis serrulatis tubum corolle subcylindricum squantibus ; laciniis lanceolatis acuminatis tubo brevioribus 
reflexis ; staminibus multo brevioribus, antheris oblongo- calls filamento equilongis ; squamis ovatis crispato-laceris 
medio tubo adnatis faucem attingentibus ; stylis capillaceis ovario minuto multo longioribus inclusis, stigmatibus 
ovato-capitatis. 
Goyaz, Brazil, parasitic on shrubs, Gardner! 3348 in Hb. Hooker. — Similar to the last, but flowe 
much larger, 23-3 ie nes long in a rather contracted inflorescence ; peduncles remarkably thick in proportion [510 (60) ] 
to the stems ; stigmata oval, almost twice as long as they are thick, a form that I have not seen 
other species. The only specimen examined is barely in flower ; the ovary is probably shaped as in the last species. 
* * Flowers closely sessile, crowded in compact and often continuous clusters. 
64. C. sQUAMATA, n. sp.: caulibus filiformibus aurantiacis ; glomerulis compactis ; bracteis 2-5 sub flore sin- 
