BOTRYCHIUM MATRICARI^FOLIUM AND B. LANCEOLATUM. 291 



A. decumbens Welw. MS. in herb., sp. unica. Herba ut videtur 

 annua, glabriuscula, nitidula, eximie decorans, habitu CineraricB ; 

 canlibus a basi ramosissimis, decumbentibus, demim ramulisque 

 ascendentibus, teretibus, rigidis, subgracilibus. Miosis, basi fere 

 lignosis ; foliis ovato-cordiformibus, firme membranaceis, in vivo 

 lucido-viridibus, f-1 poll, longis, i-f poll, latis, dentatis, dentibus 

 ovato-deltoideis acutis ; petiolo f-f poll, longo, basi subamplexicauli 

 non vel anguste decurrente, patulo ; capitulis circa f poll, diam., 

 sub-30-floris, pedunculo nudo, i-3 poll, longo suffultis ; involucri 

 bracteis interioribus ^-f poll, longis margine ciliolatis vel minute 

 fimbriatis, extimis parvis mox recurvis ; ligulis subscarioso-per- 

 sistentibus, i poll, longis, ^ poll, latis, subcymbiformibus ; florum 

 discoideorum coroJla J poll, longii, tubo pilosulo, lobis ovato- 

 deltoideis reflexis; antheris i poll, longis; stylo h poU. longo, 

 ramis ^-i poll, longis; achgenio |-i poll, longo; pappo f-J poll, 

 longo ; receptaculo i poll, diam., fructifero punctis elevatis 

 notato. 



Habitat in distr. Mossamedes, non frequens ad rupes gneissicas 

 juxta ripas superiores fluminis Bero ; cum fl. et fr., Julio 1859; 

 legit Fr. Welwitsch, No. 3999. 



This plant does not fully accord with any of the recognized 

 tribes of Compositce ; I regard it as an aberrant Senecionidea, and 

 amongst African genera place it next before Gongrothamnus. Wel- 

 witsch, doubtless, derived the name of his genus from u^ijv, a gland, 

 and ywna, an angle, in allusion to the rows of conspicuous oil- 

 glands on or along the ribs of the achenes. 



Explanation of Plate 388 a. — Psednotrichia tenella. Fig. 1. Capitulum. 

 2. Corolla. 3. Anclroecium, with the upper part of the style. 4. Ditto, the 

 anther-tube laid open. 5. Two stamens, separated from the others. 6. Upper 

 part of the style. 7. Fruiting receptacle. 8. Two seta3 of the pappus. 9. Kipe 

 achene.— Fig. 1 is slightly enlarged ; the others are more considerably enlarged. 



Explanation of Plate 389. — Adenogomtm decumbens. Fig. 1. Leaf. 2. Eay- 

 floret. 3. Disk-floret. 1. Two stamens, detached from the rest. 5. Style of a 

 disk-floret.— The principal fig. and 1 are natural size ; the others are more or 

 less enlarged. 



BOTRYCHIUM MATRICAEI^FOLIUM A. Br.- AND 

 B. LANCEOLATUM Angst. IN BRITAIN. 



By William Whitwell, F.L.S. 



(Plate 388 b & c.) 



Some months ago there was given to me by my friend Dr. 

 Ornano St. Brody, with the name Botrychium riitaceum Swartz as 

 his own identification, a specimen from Ayrshire which has the 

 interest of being the only known British example of the species. 

 It was collected by Dr. St. Brody on the sandy sea- shore of 



* In view of the uncertainty attaching to B. rutaceum Sw., I follow A. Braun 

 and Luerssen in employing the name B. matricariafolium. 



X 2 



