IIS rAKNASSIACK-K. (I'A K\ ASSI A FAMILY.) 



13. KIBES, li. CllUiAjM, (looSEUKHUY. 



Calyx tul)0 inllitri'iit to ilio ovary, tlie liiiil) nlnhcd. IVtals 5, Kinall. Sta- 

 mens ;'). Ovary l-ri-lli-tl, wiili 2 parietal placiMitiv. Styles mure or less united, 

 rriiit a l-oelled many-seeiled lierry. Seeils auatri)|)<)us, with tlic minute eni- 

 brvu at the hase <>f hard alliunien. — Sj)iny or unarmed shruhs, with alter- 

 nate palma'.ely veined and luhed leaves, withuut stipules, and witii axillary 

 raeeinose or elustered flowers. 



* Slrws sjiiiii/ (tii<l com III null/ liristli/ : j^ed uncles 1 -^-flowered. 



1. R. Cynosbati, L. Leaves on slender petioles, slightly eordate, 

 rounilisli, 3-.') loKcd, pnhescent; peduncles 2 - .'i-ilowered ; stamens and single 

 stylo not longer than the broad and short calyx tube ; petals obovate ; berry 

 mostly ])rickly. — Mountains of North Carolina. July. — Stem smooth or 

 bristly. Leaves V -2' in diameter, 



2. R. rotundifolium, Michx. Leaves small, smoothish, roundish, 3- 

 5-lobed, often acute at tiie base, on sleuder petioles ; Peduncles 1 - 2-flowered ; 

 stamens and 2-i)arted style longer tiian the uarrow-cylindrical calyx tube; 

 petals s])atulate ; berry small, smooth. — Mouutaius of North Carolina. — 

 Shrul) .3^-4'^ liigli, often unarmed. Leaves ^ - V in diameter. 



3. R. gracile, Michx. Axillary spine very short; leaves on slender 

 petioles, jmhcscent on botli sides, the lol)es acute, incised, and acutely toothed ; 

 peduncles h)ng, ca))illary, erect, 1 -2-Howered; calyx smooth, tubular-campan- 

 ulate. — Mountains of Tennessee. 



* * Stfiiis irilhout sju'nes or bristles: racemes manij-flowered. 



4. R. prostratum, L'llerit. Leaves long-petioled, deejdy cordate, with 

 about 5 sjjreailing inci.sed and serrate lobes, smooth; racemes erect; style 2- 

 cleft; berry glandular-bristly. — Mountains of North Carolina. May -June. 

 — Stems reclining. Kacemes 3'-.')' long. Leaves 2' -3' in diameter. 



5. R. resinosum, Pursh. Plant clothed in every part with resiuous 

 glandular hairs; leaves roundish, 3-5-lobed; racemes erect; bracts linear, 

 longer tlian tlic pedicels ; calyx flattish ; petals obtusely rhonihoidal ; fruit 

 hirsute. — Mountains of North Carolina. April - May. (*) 



Order 5L PARXASSIACE7E. (Parxassia Family.) 



Perennial smooth herbs, with ovate or reniform chiefly radical and 

 entire leaves, on long petioles, and large solitary flowers terminating 

 the scape-like, 1-leaved stem. — Sepals 5, persistent. Petals 5, ovate 

 or obovate, veiny, imbricated in the bud, deciduous. Fertile stamens 

 5, alternating with the petals: anthers introrse. Sterile ones in sets 

 of 3-lo more or less united filaments, placed opposite each petal. 

 Ovary 1-celled, with 3-4 parietal placent?e. Stigmas 3-4, ses.sile, 

 placed over the placentae. Capsule loculicidally 3-4-valved at the 

 apex, many-seeded. Seeds anatropous, winged, without albumen. 

 Embryo straight, cylindrical. 



