OF THE GENUS CUSCUTA. 
89 
imbricate obtusish lobes, etc. The lacinise of the corolla, always elongated, are in some flow'ers acutish, in others 
almost obtuse. 
V 34. C. PARTITA, Choisy ! Cusc. 188, t. 5, f. 3; DC. Prod. IX. 460. — Brazil, Blanchet! 3047 ; Gardner! 2684; 
westward to Bolivia, Weddell! 3483 and 3611 ; and northward to Venezuela, Maracaibo, Karsten! and Curasao, 
Friedrichsthal! 375, b; usually low, on herbaceous plants, Leguminosoe, Malvaceae, Euphorbiacece, etc. — Cymes 
compound, paniculate; bracts ovate-lanceolate, often crenate; flowers small, usually less than 1 line long, more or less 
glandulous, and filled with coloring matter, deep-red when dry, like C. miv.iata ; calyx divided almost to the base, 
lobes lanceolate acute ; lobes of corolla of same shape, at length reflexed with the points incurved; tube of corolla at 
last ventricose, enveloping the capsule, divided by grooves which correspond to the stamens into five separate exter¬ 
nally convex compartments, as it were; scales as long as the tube or shorter, deeply fringed; capillary styles much 
longer than the small globose ovary, subexsert, sometimes recurved on the fruit; capsule very thin, hyaline, irregularly 
circumscissile with a wide opening; seeds 0.5-0.6 lines long, obliquely ovate, or, where only one in a cell is developed, 
rostrate; hilum linear-oblong, short, in the former seeds perpendicular, in the latter transverse. 
The specimens from Bolivia have; larger, less glandulous, and paler flowers, 1^-lJ lines long, “ yellowish-white 
or rose-colored,” but do not differ in any other respect. 
\/ 35. C. umbellata, HBK.! N. Gen. Sp. III. 121; DC. Prod. IX. 460. C. parviflora, Willd. ! Hb. 
nro. 3163.—This species seems to have been unknown to all later botanists, with the exception of Torrey, who 
recognized Humboldt’s plant in a specimen collected by Long’s expedition to the Rocky Mountains. Lately it has 
turned up from many localities along the United States and Mexican boundary line, from northern Mexico, and from 
the Antilles. In Brazil a form has been collected which I cannot specifically distinguish from the Mexican plant. — 
The flowers of this species are arranged in loose compound fasciculate cymes, the ultimate divisions forming umbels of 
3-5-7 flowers, supported by a single ovate-lanceolate bract; pedicels usually longer than the flower ; flower, with the 
lobes of the corolla erect, 1^-2 lines long ; calyx broadly campanulate, thin and shining, at least when 
dry; lobes triangular, acute, as long or longer than the shallow tube of the corolla; lacinise narrowly [488 (38)] 
lanceolate, elongate, acute, longer than the tube, spreading or reflexed ; scales usually broadly oval, large, 
longer than the tube, incurved ; styles much longer than the globose-depressed ovary, rarely of same length ; corolla 
enveloping the small, thin, depressed, almost 4-lobed capsule, which is commonly circumscissile, but in some instances 
rather irregularly bursting; seeds generally all four developed, 0.5-0.6 lines long, triangular, oblique, with a very 
short linear hilum. 
It is always found in dry places on low herbs, especially Portulaca , also Kallstrcemia , Amarantus, A triplex, 
Polygonum, etc., and sometimes even on some prostrate Euphorbice: between Queretaro and Salamanca, Hum¬ 
boldt ! Saltillo and Camargo, Gregg ! Western Texas, New Mexico, and Arizona, Wright! 1627, 1636, 1639 
(371, 510, 695), Bigelow! Schott! Santa Fe, Fendler ! 659; foot of the Rocky Mountains, James! Jamaica, 
Broomfield ! Purdie! 
Dr. Hays found a specimen on the San Pedro River, Arizona, on Suceda, with much more dense inflorescence, 
greatly resembling a form of C. Californica, — which will be noticed below, — parasitic on the same saline plant, and 
mainly distinguished by the broadly campanulate, not turbinate, calyx, the circumscissile capsule, and the seeds. 
Some specimens from New Mexico show a tendency to papillose pubescence; and one from Sonora, Coulter! 
1010, on some Euphorbia , has the unusually small flowers (1 line long) quite papillose-scabrous. 
Var. /3. ? desertorum. C. desertorum, Martius! in Hb.: pedicels long ; flowers less crowded, smaller, 1 line 
long; lanceolate-linear lacinise twice as long as tube; scales small, bifid or reduced to two lateral toothed lobes; 
styles shorter than the exsert capsule, which is circumscissile with a small opening ; intrastylar aperture large; seeds 
only 0.4 line long. — On Portulaca and Ehrenbergia, in the province of Piauhy, Brazil, Martius! —Another similar 
form, but with longer tube and shorter lacinise and rather larger scales, was collected by Gardner ! 2425, in the 
province of Ceara, in the same neighborhood, also on Portulaca . 
A specimen from the island of Antigua in Hb. Martius, Wullschlsegel! 352, seems to belong here, though the 
(unripe) capsules do not open ; flowers larger and more densely clustered than in the common form, calyx and capsule 
glandulous, intrastylar aperture large. 
^ 36. C. gracillima, n. sp.: caulibus tenuissime capillaceis demum deciduis ; floribus in fasciculos decompositos 
demum dense glomeratos congestis ; bracteis lineari-lanceolatis ; pedunculis ramosissimis; pedicellis capil¬ 
laceis flore gracili longioribus ; calycis turbinati lobis lanceolatis ssepe apice recurvis tubum corollse paulo [489 (39)] 
superantibus ; laciniis lanceolatis subulatis tubo multo longioribus erectis apice subrecurvis ; staminibus 
lacinias superantibus, filamentis e basi subulata capillaceis, antheris ovatis; squamis laceris fimbriatis incurvis tubum 
excedentibus; ovario parvo globoso, stylis capillaceis longissimis antheras fere attingentibus ; capsula corollse rudi- 
mento indusiata demum irregulariter transverse disrupta; seminibus lenticularibus lseviusculis. — C. fcetida, Hook. & 
Arn.! Bot. Beechy, 304, non HBK. C '. subtilis , Chaubard! in Hb. 
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