88 



KEY TO THE FAMILIES AND GENERA 



E. Valves appcndagcd 15. Anastatica. 



(See article Resurrection Plants.) 

 EE. Valves not appendaged. 



r. Stigmatic lobes erect, connate or 



decurrent along the style. 

 a. Plants are herbs or branched 



sub-shrubs: woolly 16. Matthiola. 



GG. Plants are tufted, scape-bearing 



herbs 17. Parrya. 



FF. Stigma undivided or shortly 



lobed. 

 Q. Valves elastic: seeds in 1 or 2 



series, silique long and linear.. . 18. Arabia. 

 GO. Valves not elastic. 



H. Sepals unequal, the lateral 



ones saccate at the base .... 19. Cheiranthus. 

 tin. Sepals equal. 



i. Seeds in 2 series 20. Rculicula. 



H. Seeds in 1 series. 



J. Fls. yellow 21. Barbarea. 



jj. Fls. white or purple. 



K. Rhizome not scaly: 

 valves delicately net- 



ted-nerved 22. Cardamitie. 



KK. Rhizome scaly: valves 

 with very delicate 



midrib 23. Dentaria. 



DD. Seeds in 2 series and siliques short and 



broad (except in some species of 



Aubrietia, Draba and Cochlearia). 



E, Siliques 2-locular, many-seeded; 



seeds much compressed, winged or 



margined. 



F. Lvs. entire or dentate: siliques 



long-stalked, very broad 24. Lunaria. 



FF. Lvs. pinnatisect : siuques sessile ... 25. Selenia. 

 EE. Siliques 1-2-loculed, 2- to many- 

 seeded; seeds rarely winged; valves 

 often turgid. 

 F. Sepals often unequal, the lateral 



saccate at the base, 

 a. Fls. purple: siliques oblong: 



lateral sepals saccate 26. Aubrietia. 



GO. Fls. generally yellow: siliques 

 mostly oblong: sepals equal or 



unequal 27. Vesicaria. 



FF. Sepals equal. 



G. Stamens often appendaged 28. Alysaum. 



GG. Stamens not appendaged. 



H. Plants tomentose 29. Draba. 



HH. Plants glabrous 30. Cochlearia. 



(See also Kerne ra.) 



ccc. Cotyledons incumbent, straight, con- 

 volute or transversely plicate. 



D. The cotyledons transversely biplicate. ..31. Heliophila. 

 DD. The cotyledons not transversely bipli- 

 cate. 



E. Petals pinnatifid 32. Schizopet- 



EE. Petals not pinnatifid. [alon. 

 F. Stigmas erect, free or connate into 

 a cone; sepals long and straight. 

 G. The stigmas bilamellate; la- 

 mellae erect 33. Hesperis. 



GG. The stigmas bilamellate; la- 

 mellse connivent or connate 



into a cone 34. Malcomia. 



FF. Stigma simple, capitate, emargi- 

 nate or shortly 2-lobed: cotyle- 

 dons straight 



G. Silique stipitate 35. Stanleya. 



GG. Silique sessile. 



H. Sepals equal 36. Smelowakia. 



HH. Sepals unequal 37. Erysimum. 



The additional genera are also treated: Braya, Physaria, and 

 Phyeoptychis. 



17. CAPPARIDACE^E. 



*.. Fr. capsular, 1-loculed: herbs. 

 B. Torus short, often produced into a posterior 



appendage 1. Cleome. 



BB. Torus long, produced into a gynophore 

 which is elongated at the middle and bears 

 the pistil to which the filaments are 



united 2. Gynandrop- 



AA. Fr. berry-like or drupe-like. [*. 



B. Lve. simple 3. Capparis. 



BB. Lvs. with 3 Ifts 4. Cratxva. 



Polanisia is also to be expected in cultivation. 



19. CISTACE.<E. 



A. Placentae with many seeds: Ivs. opposite at 

 " least below, flat. 



B. Valves 5, rarely 3; embryo circinate or 

 spiral: fls. solitary or cymose, rarely 



racemose i. Ciatus. 



BB. Valves 3; embryo biplicate, runcinate or 



circumflex: fls. commonly racemose 2. Helianthe- 



AA. Placentae with 2 seeds: lys. alternate, scale-like (mum. 



or awl-shaped: heath-like shrubs 3. Hudsonia. 



20. VIOLACE^E. 



A. Sepals subequal, produced or spurred at base; 



lower petal spurred or saccate: herbs 1. Viola. 



AA. Sepals not produced at base. 



B. Lower petal spurred or enlarged. 



c. With a very large spur: seeds complanate: 



woody climber 2. Corynoa- 



cc. With lower petal merely gibbous: seeds [tylis. 



obovoid-subglobose: herbs 3. Solea. 



BB. Lower petal not greatly unlike the others: 



shrubs or trees 4. Hymenan- 



\thera 



21. BIXACE.E. 



A. Caps. 2-yaIved; seeds straight and naked: 



Ivs. entire 1. Bixa. 



AA. Caps. 3-yalved: seeds spiral, hairy or woolly: 



Ivs. digitate or palmately lobed 2. Maximili- 



[anea. 



22. FLACOURTIACE^I. 



A. Sepals and petals alike, 9-15, spirally ar- 

 ranged, red; stamens 7-10: twining shrub.. 1. Berberidop- 

 AA. Sepals 3-6, whorled; stamens usually numer- [sis. 



ous (except in No. 4): upright trees or shrubs. 



B. Petals 4-10; sepals 3-5 2. Oncoba. 



BB. Petals wanting. 



c. Infl. axillary: Ivs. penninerved, leathery: 



fr. a berry or drupe. 



D. Style simple, sometimes lobed at apex; 

 ovary 1-celled. 



E. The sepals imbricate; style short 3. Xyloama. 



EE. The sepals valvate; style elongated; 



stamens sometimes 5 or 10 4. Azara. 



DD. Styles several; ovary irregularly 



divided. 

 E. Fls. perfect or polygamous, in axillary 



racemes or panicles: fr. adrupe 5. Flacourtia. 



EE. Fls. dioecious, the pistillate solitajy 



or few: fr. a berry 6. Aberia 



cc. Infl. terminal: Ivs. hand-nerved or 3- (or Doryalis. ) 



nerved at base, long-stalked, deciduous. 

 D. Fr. a berry; styles usually 5; sepals 



imbricate 7. Idesia. 



DD. Fr. a caps. 



E. Styles 3, 2-parted at apex; sepals 



valvate 8. Poliothyrsi*. 



EE. Styles 3-^4, 3-parted at apex; sepals 



reduplicate, large 9. Carrierea. 



23. PITTOSPORACE.E. 



A. Fr. indehiscent. 



B. Filaments longer than anthers: petals more 

 or less connivent from the base to beyond 



the middle 1. Billardiera, 



BB. Filaments shorter than anthers; petals 



spreading from the base 2. Sollya. 



AA. Fr. a caps, which is loculicidally dehiscent. 

 B. Caps, thick-coriaceous; seeds numerous. 

 c. Seeds not winged, thick or sligntly com- 

 pressed 3. Piltosporum. 



cc. Seeds winged, flat, compressed, horizontal. 4. Hymenoa- 

 BB. Caps, thinly coriaceous: seeds 1-2 in each [porum 



locule, compressed, not winged, vertical. . . 5. Buraaria. 



24. TREMANDRACE^E. 



A. Anthers 2-celled, or 4-celled in 2 planes 1. TetratHeca. 



AA. Anthers 4-celled in I plane 2. Platytheca. 



18. RESEDACE). 



In cultivation Reseda. 



25. POLYGALACE^E. 



In cultivation Polygala. 



