ROSACEAE 619 
or ovate, 7-8 ane long: drupelets ellipsoid ovoid, 3-4 mm. long.—(DEw- 
DROPS. STAR-VIOLET.)—Woods, often in acid soil, Blue Ridge oe more 
provinces, rarely extending into Coastal Plan Soa N. C. to Minn. and 
N. B.—Spr.- 
RUBACER Rydb. Perennial partly ‘shrubby diffuse plants.  Leaf- 
"n euin lobed. Flowers corymbose or racemose.  Carpels borne 
on a flat receptacle. Fruit depressed-hemi- 
spheric or near "i flat.—About 3 species, 
North Ameri 
1. R. odoratum (L.) Rydb. Stem 1-2 m 
p clammy-pubescent : a blades 5-30 
ey 3—5 lobed: sepals elongate, each 
NA ovate or wed -ovate ody a and a 
a appen ndage: petals rose-purple 
ad: fruits 
atus L. 
BERRY-ROSE. E. THIMBLE -BERRY. )—Roe eky banks 
and woods, various provinces N of Coastal 
Plain, Ga. to Mich. and N. 8S. om 
22. RUBUS [Tourn.] L. Perennial erect or trailing shrubs. Leaf-blades 
simple or 3-7-foliolate. Flowers solitary or variously disposed. Petals white 
to purple. Carpels borne on a convex or conic receptacle. Fruit hemispheric 
or elongate, composed of drupelets.—About 200 species, most een in the 
north temperate regions.—Spr.— RASPBERRIES. BLACKBERRIES. BRAMBLES.— 
r. or early sum.—The stems are biennial in our species. The shoo " " the 
season, called turions, arise from the scaly subterranean buds.—The following 
treatment is based on that of Per Axel Rydberg in North Ameriean Flora. 
Drupelets united into a thimble-like aggregate fruit which falls away oo the dry 
receptacle.—RASPBERRIES. I. IDA 
Drupelets united and on the fleshy receptacle or falling off 
together Es the receptacle, or falling away separately. 
LACKBERRIES. 
Shoots of the 2n (turions) erect: stems erect, arch- 
ing, or re 
Blades of De TS white-tomentose beneath. II. Ve MN 
Blades of the leaflets not white-tomentose beneath. III. ARGUTI 
Shoots of the season EE ORE) and stems pr EA IDEA only 
oral branches 
nu Mrd: Sot pri OR leaves deciduous, except in 
hispidus in which the leaflets are 'obovate. 
Stern prickly and prickles confined to the angles of 
the stem. IV. PROCUMBENTES. 
ec m rare d numerous bristles which are not 
e angles. V. HISPIDI. 
inore cede with Aenea prickles : leaves persistent : 
blades of the leaflets oblanceolate or elliptic. VI. TRIVIALES. 
I. IDAEI 
opp white; petals erect or ascending. 
Inflorescence corymbiform : n dd ues when with 
han 3 leaflets, peda tely com nd. 1. R. occidentalis. 
Talo once racemose: fruits red: Tenge: when with more 
than aflets, pinnately compound. 2. R. carolinianus. 
Corolla rose or purple ; petals incumbent, 21 to the 
stamens: stem densely hispid, but not glandu la 3. R. phoenicolasius. 
II. DISCOLOR 
Blades of the lateral leaflets cuneate to » obovate : blade of the 
terminal leaflet entire near the base 4. R. cuneifolius. 
