120 THE JOUlfNAL OF 130TAXY 



large perfectly-developed lower caiiline leaves, etc. Both P. TVel- 

 loitschii and P. rohusta have the ovary densely hairy, while in 

 P. huilhnsis Welw. it is much less so, the mature fruit having only 

 scattered hairs, rather thicker on the ribs. I have not seen the fruit 

 of P. WeliL'itscliii. 



Peucedanum Gossweileri, sp. nov. 



Serha alta perennis, glaberrima, leviter ramosa, caule striato : 

 foliis longe petiolatis bi-ternato-pinnatis 14-28 cm. longis ; foliolis 

 petiolatulis 2:)rofunde pinnatisectis, segmentis ultimis angustis brevi- 

 busque ; iimhellorii?)i Y'ddiis ±12 longissimis usque ad 10 cm. longis, 

 tenuibus ; umbellulorum pedicellis 6-12 tenuisshnis 1^-3 cm. longis ; 

 involucri et involucellorum bracteis paucis, subulatis : calycis den- 

 tibus minimis, stylopodio parvo conico, stylis brevibus ; fructu ])yri- 

 formi ±1 cm. longo, -+:6 mm. lato ; jugis dorsalibus prominulis ; 

 lateralibus in alas papyraceas productis ; vittis valecularibus 8 ad 

 commissuram saspissime 6 : carpophore bipartito. 



Angola ; nn. 3011, 2715. *' In woods, principally Mumua, on 

 the right margins of the river Langa : rare." 



No llow^ers have been preserved — many seem to have been males 

 or barren. The large fruit, the many vittie, and the tinely-cut leaves 

 are the outstanding features of this species. 



Annesorhiza Gossweileri, sp. nov. 



Herba perennis, 4-5 dm. alta, leviter ramosa, caule terete glal)ro, 

 radice fusiformi V 15 cm. X 1^ cm. : foliis radicalihus petiolatis, 

 digitato-trifoliolatis ; petiolo ±3 cm., foliolis 3-5 cm. longis late 

 linearibus ; foliis caulinis simplicibus linearibus usque 5 cm. longis : 

 nmhrllornm. radiis ±10 ina^qualibus, 2-5 cm. longis ; umhellidoruin 

 pedicellis 10-12, tenuibus, ±4 mm. longis ; involucri et involucel- 

 lorum bracteis, paucis, linearibus, acuminatis : calycis dentibus obso- 

 letis; stylis brevissimis : fructu pyriformi ±8 mm. longo; stylo- 

 podio parvo ; mericarpiis iufequalibus, jugis j^rimariis nunc 3 nunc 4 

 in alas crassiusculas iniequales productis ; vittis valecularibus soli- 

 tariis, ad commissuram 2, seniine terete, carpo]ihoro bipartito. 



Angola; n. 3405. A fruiting specimen without flowers. 



A typically South African genus : the j^resent species is well 

 marked by the relatively large fruits. 



HOW AKE PLANTS AWARE OF TIME ? 

 Br R. Irwin Lt^-^ch, A.L.S. 



[Re]:»rinted by permission from the Gardeners^ Clironicle of 

 Jan." 21.] 



The majority of people would, perhaps, reply off-hand to this 

 query that it is a question of season, which plants are conqx-lled to 

 know by physical circumstances, such as conditions of temperature 

 and moisture ; but ver}^ little rellection will show that this answer is 

 incomplete. 



In my garden, as a weed, I have a Cape Oxalis, much like 

 0. versicolor, and now, in spite of being chilled and discouraged hy 



