CONVOLVULACE/E. 



251 



559. CRESSA. 



1. cretica. Stem herbaceous, puLescent, 

 not milky. L. entire, addressed. Fl. crowded. 

 a. Moist shores, mdt. Fr. 



560. CUSCUTA. 



A, Stigma filiform. Flowers sessile, Koch. 



1. densifilora. Stem quite simple. Tube 

 of Cor. globose, twice as long as border. Scales 

 adpressed. a. 7, 8. On flax. Eng. G. 



2. europsea. Branched. Tube of Cor. 

 cylindrical, as long as segments. Scales ad- 

 pressed, bipartite, not easily seen. a. 7, 8. 

 Parasitic on herbs and willows. 



3. Kpithymum. Branched. Tube of Cor. 



cylindi'ical, as long as acute segments, much 

 longer than calyx. Scales palmate, converging, 

 and closing the tube. a. 7, 8. Parasitic on 

 heath, furze, ^c. 



4. Trifolii. Branched. Tube of Cor. as 

 long as segments, hardly exceeding calyx. 

 Scales palmate, converging, closing the tube. 

 7, 8. Oh Trifolium. Eng.— Bab. 



5. planiflora. Branched. Tube of Cor. 

 campanulate, half as long as segments, a. 7- 

 Cm Colutea arborea, near Botzen ; 0)i Aspenila 

 cyncmchica, Monte Velino ; on Carlina gum- 

 mifera, Bocca di Falco, Sic. 



B. Stigma capitate. 



0. alba. Branched, Tube of Cor. cyliii- 

 di'ical. Segm. of this and of Cal. obtuse. 

 Scales crest-like. Styles 2. Fl. sessile, in 

 sessile heads, a. 5, 6. Parasitic on TJmbel- 

 lates, Galium, Plantago, Zizyjjhus, ^c. 

 Sicily. 



7. corymbosa. " Stem thread-like. Fl. 

 corymboso-panicled. Corymb many-flowered. 

 Pedicels fleshy. Cal. 5 -partite. Segm. obtuse. 

 Cor. campanulate, twice as long as calyx. 

 Teeth somewhat acute, a. Parasitic on M.e- 

 dicago ; brought loith seeds from America^ — 

 Choisy in DC. 



8. hassiaca. " Stem branched. Fl. in 

 bundles, stalked. Tube of Cor. campanulate, 

 as long as border, closed with converging 

 scales. Segm. spreading, with a horny, in- 

 flexed tip. Styles 2. a. 8, 9. Parasitic on 

 Compositce, Medicago, and other plants. 

 Hesse. Nassau." — Koch. I have inserted both 

 these descriptions, not knowing whether they 

 refer to the same or to different species. 



9. monogyna. Branched. Fl. in spikes 

 (heads or racemes, Choisy), bracteate, at last 

 stalked. Tube of Cor. cylindrical, twice as 

 long as border. Scales adpressed. Only 1 

 Style ! a. 7, 8. Chiefly on willows, Silesia. 

 On vines, lower Lang. 



LXVIII. BORRAGINE^. 



CoroUa inferior, of 1 petal. Germens 2 or 4. Style 1. Seeds in aU 4. 



561. CERINTHE. 



1. major. L. with callous dots, setoso- 

 ciliate. Teeth of Cor. very short, acute, re- 

 flexed. Fit. shorter than anthers, a. 5. 

 Woody hills, s. Eur. 



j8. aspera. Fil. as long as anthers. L. 

 more bristly, and with more callous 

 points. 



2. alpina. L. without bristles. Callous 

 Dots small. Anthers fom- times as long as 

 filaments. Teeth of Cor. somewhat longer 

 than broad, recm-ved at top. Segm. of Cal. 

 unequal : the lai-ger ovate ; the smaller oblong, 

 p. 6, 7. Alps. 



3. temiiflora, Bert. Cal. much elongated 

 in the fruit. 



3. longifiora. L. smooth above. Segm. 

 of Cal. all equal, linear, obtuse. Cor. deeply 

 5 -toothed. Teeth acute. Style extending to 

 twice the length of calyx. Isl. of Tavolara. 

 — Viv. 



4. minor. L. not ciliate (excepting some- 

 times the upper floral L.). Segm. of Cal. un- 

 equal. Teeth of Cor. erect, more than twice as 

 long as broad, b. 5-7, Koch. 6-10, Beet. 

 Fields and borders, e. G. u. e. It. 



jS. maculata, Bert. Segm. of Cal. very 

 unequal. Am'icles of L. often overlapping. 



7. auriculata. Beet. Sialics shorter than 

 calyx. Amides of L. divergent. 



Bertoloni considers as species all the vari- 

 eties I have enumerated hi this genus. 



