IGG SAXiKiJAGAcn^. (saxifrage family.) 



and niimoroiis il<nvcrs in (.•oiiijiound ovmcs. The marginal flowers arc usually 

 sterile aiul r;i(liiiiif, euiisisiiiii; nuiilv of a nuiuhranaeeous and colored flat and 

 dilatetl ealyx, and siiowy. (Xante from vBoip, water, and (i-yyos, a vxise.) 



1. H. arboreseens, h. (Wild Hyukangea.) Glabrous omearly so; 

 haves ovate, rarely heart-shaped, pointed, serrate, fjreen both sides ; cyrnes flat. 



— Koeky banks, N. Jersey to Illinois, and southward. July. — Flowers often 

 all lertile, rarely all radiant, like the Ganlm J/i/flraiigea. 



4. PHILADEL^HUS, L. Mock Orange or Strinca. 



Calyx-tube top-shaped, coherent with the ovary ; the limb 4 - 5-parted, spread- 

 ing, persistent, valvate in the bud. Petals rounded or obovate, large, eouvolute 

 in the bud. Stamens 20-40. Styles 3- 5, united below pr nearly to the top. 

 Stigmas oblong or linear. Pod 3 - 5-celled, splitting at length into as many 

 pieces. Seeds very numerous,. on thick placentie projecting from the axis, ])en- 

 dulous, with a loose membranaceous coat prolonged at both ends. — Shrubs, 

 with oppositu often toothed leaves, no stipules, and solitary or eymose-clu.Sfered 

 showy white flowers. (An ancient name, applied by Linnaius to this genus for 

 no obvious reason.) 



1. P. inoddrus, L. Glabrous; leaves ovate or ovatc-oblong, pointed, 

 entire or Avitii some spreading teeth ; flowers single or few at the ends of the 

 diverging branches, pure white, scentless ; calyx-lobes acute, scarcely longer 

 than the tube, — Mountains of Virginia, and southward. 



Var. grandifl6rus. Somewhat pubescent ; flowers . larger ; calyx-lobes 

 longer and ta]ier-pointed. — Virginia and southward, near the mountains. 

 May-July. — A tall shrub, with long and rccun-ed branches : often cultivated. 

 P. coroxXrius, L., the common Mock Or.^^ge or Syrixga of the gar- 

 dens, with cream-colored, odorous flowefs, in full clusters, the crushed foliage 

 with the odor and taste of cucumbers, •^ has sometimes escaped from grounds. 



5. PAENASSIA, Tourn. Grass of Parnassus. 



Sepals 5, imhricated in the bnd, slightly united at the base, and sometimes 

 also with the base of the ovary, persistent. Petals 5, veiny, spreading, at length 

 deciduous, imbricated in the bud : a cluster of somewhat united gland-tipped 

 sterile filaments at the base of each. Proper stamens 5, alternate \Vith the 

 pct4»ls- filaments persistent: anthers opening inwards. Ovary 1 -celled, with 

 4 projecting parietal plnccntie : stigmas 4, sessile, directly over the phicentie. 

 Pod 4-valve(l, the valves bearing the plaeent^B on their middle. Seeds very nu- 

 merous, anatropous, with a thick wing-like seed-coat and little if any albumen. 

 Embryo straight : cotyledons very short. — Perennial smooth herbs, with the 

 leaves entire and chiefly radical, and the solitary flowers terminating the long 

 naked stems. Petals white, with greenish or yellowish veins. (Named from 

 Mount Parnassus : called Grass of Parnassus by Dioscorides.) In former 

 edition placc<l between Droseraceae and Hypericaceae. 



I. P. parvifldra, DO. PcUtts sessile, httlc longer than the calyx; sterile 

 fitamn}ls ahniit 5 in cnrh set, slender ; leaves OiKite or ohlonf), tapering at the base. 



— N. W. shore of L. Michigan (White-Fish Bay^ Wisconsin, Henri/ Gillman), 



