166 ROSACE Z. 
the triangular lobes shorter than the tube, reflexed, pubescent within; 
' petals broadly obovate, rounded at the apex, 4-6 lines long, white; stam- 
ens about equalling the calyx-lobes, persistent; styles filiform, thickened 
toward the summit, longer than the stamens, united and pubescent be- 
low; fruit globose, 4-5 lines in diameter, crowned with the persistent 
calyx-lobes. On dry hillsides, eastern Oregon to California. 
. ORDER XXIX. ROSACE/® Juss. Hort. Trian., Endl. Gen. 1240. 
Herbs or shrubs with alternate simple or compound leaves, 
mostly foliaceous commonly adnate stipules and perfect or uni- 
sexual flowers in cymes, corymbs, panicles or solitary. Calyx 
‘free from the ovary, 4—5-clefi, the segments mostly valvate in 
the bud, commonly persistent. Petals perigynous, as many as 
‘the lobes of the calyx and alternate with them, or none. Sta- 
_mens five to many, perigynous, rarely hypogynous. Pistils one 
to many; ovary usually one-celled and one-valved, sometimes 
many-ovuled; ovules pendulous or ascending. Styles as many 
as the ovaries, inserted terminally or laterally, persistent or 
deciduous. Fruit achenes drupelets or follicular. Seeds 
mostly anatropous, with little or no albumen. seid 
Tripet. Roska. Carpels many, becoming bony achenes, en- 
_ closed and concealed in the globose or urn-shaped fleshy calyx- 
- tube which resembles a pome. 
1. Rosa. Erect, usually prickly shrubs with pinnate leaves and large 
flowers. | 
TRIBE II. SANGUISORBEX. Carpels 1-3, becoming achenes, 
completely enclosed in the dry and firm calyx-tube, the throat 
of which is constricted or sometimes nearly closed: ovule sus- 
_ pended, solitary. Ours are herbs with compound or lobed leaves. 
mS Sanguisorba. Calyx-lobes petaloid, deciduous; the tube 4-angled 
naked; petals wanting: carpels 1-2: herbs with compound leaves and 
red or white flowers in dense spikes. 
3. Agrimonia. Calyx turbinate, surrounded by a margin of hooked 
rickles: stamens 5-15: carpels 2: perennial herbs with pinnate 
eaves and yellow floweis in spicate racemes. . 
4. Alchemilla. Calyx urceolate, naked, minutely bracteolate: petals 
wanting: stamens 1-4: small annuals with minute flowers in axillary 
clusters. 
Tribe mr. DryapE#. Carpels numerous, several or solitary, 
~ J-ovuled, becoming dry achenes: calyx not enclosing or at 
least not constricted over the fruit: seeds erect or ascending. 
* Shrubs: carpel solitary: style not elongated in fruit; stigma 
decurrent: calyx imbricated, without bractlets: radicle inferior. 
5. Kunzia. Diffusely branched shrubs with mostly fascicled leaves and 
solitary yellow flowers, terminal on the short branchlets. 
* * Trees or shrubs: carpels solitary: style elongated and plumose | 
in fruit: calyx imbrieated, without bractlets: seeds erect. 
6. Cercocarpus. Small trees or shrubs with simple leaves and axillary 
