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Early Journal Content on JSTOR, Free to Anyone in the World This article is one of nearly 500,000 scholarly works digitized and made freely available to everyone in the world by JSTOR. Known as the Early Journal Content, this set of works include research articles, news, letters, and other writings published in more than 200 of the oldest leading academic journals. The works date from the mid-seventeenth to the early twentieth centuries. We encourage people to read and share the Early Journal Content openly and to tell others that this resource exists. People may post this content online or redistribute in any way for non-commercial purposes. Read more about Early Journal Content at http://about.jstor.org/participate-jstor/individuals/early- journal-content. JSTOR is a digital library of academic journals, books, and primary source objects. JSTOR helps people discover, use, and build upon a wide range of content through a powerful research and teaching platform, and preserves this content for future generations. JSTOR is part of ITHAKA, a not-for-profit organization that also includes Ithaka S+R and Portico. For more information about JSTOR, please contact [email protected]. Vol. 44 No. 2 BULLETIN OF THE TORREY BOTANICALCLUB FEBRUARY, I9I7. Noteson Rosaceae-XI PER AXEL RYDBERG RoSES OF CALIFORNIA AND NEVADA Two years ago I had practicallycompleted the manuscriptfor the monographof the genus Rosa to be printedin the NorthAmer- ican Flora. As this would only make half a part as usually pub- lished,and as the restof the manuscriptfor the same part,which is to be contributedby otherpersons, is not yet readyand may not be forsome time, I thoughtit would be advisable to publish some of the notes and some of the descriptionsof new species in advance. Besides, ProfessorLe Roy Abrams, of the Leland Stanford Uni- versity, has sent me fordetermination the collection of North American roses, found in the herbariumof the said institution. I thereforethink it is a propertime to put on recordmy present knowledgeof the genusRosa, with particularreference to California and Nevada, the two states best representedin that collection. Key to the groups alLd species Pistils numerous; styles as well as the upper part of the hypan- thium persistent. Flowers corymbose or, when solitary, supported by bracts; achenes borne both on the inner walls and in the bottom of the receptacle; leaflets large. Stem with scattered prickles, rarely also with inter- mixed bristles; sepals distinctly lobed; foliage glan- dular-punctate, sweet-scented. I. CANINAE. Stem, at least the young shoots, bristly; prickles infra- stipular or lacking; sepals entire or only the outer [The BULLETIN for January (44: I-64) was issued February I2, I9I7.] 65 66 RYDBERG: NOTES ON ROSACEAE ones occasionally with one or two lobes; foliage not sweet-scented. II. CINNAMOMIAE. Flowers solitary, bractless; achenes inserted only in the bottom of the hypanthium; leaflets very small. III. MINUTIFOLIAE. Pistils few; styles deciduous with the upper part of the hypan- thium which falls offlike a ring. IV. GYMNOCARPAE. I. CANINAE A climbing rose. i. R. rubiginosa. II. CINNAMOMIAE Flowers mostly solitary; petals usually 2.5 cm. long or more; hypanthium in fruit I2-20 mm. thick; prickles straight. Prickles stout, more or less flattened below, ascending; petioles, rachis, and lower surface of the leaflets not pilose, except sometimes on the veins. Leaflets very thin, pale and slightly glandular-puber- ulent, but not muriculate beneath. 2. R. nutkana. Leaflets thicker, dark-green on both sides, conspicu- ously glandular-muricate beneath. 3. R. muricutlata. Prickles weak, almost terete; petioles, rachis, and lower surface of the leaflets distinctly pilose. 4. R. Brownii. Flowers mostly corymbose; if solitary, the petals 2 cm. long or less; fruit rarely mor-e than I cm. thick. Prickles more or less curved; leaves more or less softly villous or pilose. Leaflets not at all glandular beneath, mostly simple- toothed; hypanthium with a distinct neck, often ovoid. 5. R. californica. Leaflets conspicuously glandular beneath, more or less double-toothed. Hypanthium with a distinct neck. Leaflets broadly oval or obovate; fruit sub- globose or broadly obovoid. 6. R. Aldersonii. Leaflets elliptic; fruit elongate-ellipsoid. 7. R. Greenei. Hypanthium depressed-globose, without a neck; leaflets elliptic or narrowly oval. 8. R. brachycarpa. Prickles straight or nearly so. Hypanthium normally not bristly. Hypanthium globose or nearly so; neck obsolete or inconspicuous. Sepals lanceolate, with long caudate-attenuate or foliaceous tips, more than I cm. long. Stipules, petioles, and rachis copiously glandular; leaflets orbicular or rounded- ovate, often double-toothed with gland- tipped teeth, more or less glandular- granuliferous beneath. Leaflets very thin; prickles slender. RYDBERG: NOTES ON ROSACEAE 67 Leaflets green on both sides; petals about 2 cm. long. 9. R. pinetorum. Leaflets pale beneath; petals about I cm. long. IO. R. calavera. Leaflets not very thin, dark-green; prickles stout. Leaves scarcely pubescent beneath. 3. R. muricutlata. Leaves decidedly pubescent beneath. Leaflets rather simply serrate; hypanthium pilose when young. i i. R. santae-crutcis. Leaflets conspicuously double-ser- rate; hypanthium glabrous. I2. R. Dutdleyi. Stipules, petioles, and rachis not conspicu- ously glandular (stipules glandular- denticulate in no. i8). Leaflets glabrous or nearly so. Leaflets broadly oval, 3-5 cm. long. I3. R. rivalis. Leaflets obovate to elliptic, rarely 3 cm. long. Leaflets usually obovate, not shin- ing; plant not conspicuously prickly. I4. R. chrysocarpa. Leaflets elliptic, shining; plant usually very prickly. I5. R. mohavensis. Leaflets more or less pubescent beneath. Leaflets villous or pilose beneath, rounded or broadly oval; prickles stout. Leaflets sparingly pubescent on both sides, thin; prickles rather few. i6. R. myriantha. Leaflets pubescent on both sides, densely so beneath, thick; prickles very numerous. I7. R. Davyi. Leaflets finely puberulent beneath; prickles rather weak. Leaflets rounded-oval or subor- bicular, thick; stipules conspicu- ously glandular-denticulate; pe- tals less than I cm. long. i8. R. rotuindata. Leaflets elliptic to oval; stipules slightly if at all glandular- dentate; petals larger. Sepals decidedly glandular on the back; prickles few, small and ascending. I9. R. pisocarpa. Sepals not glandular on the back. 68 RYDBERG: NOTES ON ROSACEAE Leaflets broadly oval, thin, 2-5 cm. long; plant nearly unarmed. 20. R. salictorum. Leaflets narrQwly oval or elliptic, less than 3 cm. long. Leaflets firm; prickles few. 2I. R. ultramontana. Leaflets thin; prickles numerous. 22. R. gratissima. Sepals ovate, less than i cm. long, rtotconspicu- ously caudate; leaflets glandular-double- toothed, glabrous or slightly glandular-granu- liferous beneath. 23. R. Bolanderi. Hypanthium elongate, with a distinct neck. Hypanthium glabrous. Leaves finely puberulent beneath; fruit elliptic; plant unarmed or nearly so. 24. R. Pringles. Leaves glabrous; fruit urn-shaped; prickles rather stout, flattened below. 25. R. Copelandii. Hypanthium pilose when young, ellipsoid; leaves pilose, densely so and glandular- granuliferous beneath. 26. R. pilifera. Hypanthium densely bristly or prickly. Leaflets thin, usually more than I.5 cm. long, not glaucous; sepals more than i cm. long. Leaflets densely glandular-granuliferous beneath; teeth usually lanceolate in outline. 27. R. granulata. Leaflets sparingly glandular-granuliferous be- neath; teeth ovate in outline. 28. R. spithamaea. Leaflets firm, glaucous, less than I.5 cm. long; sepals less than I cm. long. 29. R. sonomensis. III. MINUTIFOLIAE One species. 30. R. minutiflora. IV. GYMNOCARPEAE Leaves glabrous beneath; prickles very slender. Flowers usually solitary, not leafy-bracted; stipules nar- row; leaflets with lanceolate teeth; fruit 6 mm. in diameter or less. Leaflets 5-7, usually more than I.5 cm. long, the terminal one rounded at the base. 3I. R. gymnzocarpa. Leaflets 7-9, usually less than I.5 cm. long, the terminal one usually acute or cuneate at the base. 32. R. prionota. Flowers mostly 2-4 together, leafy-bracted; upper stipules broadly dilated; leaflets with broadly ovate teeth; fruit 6-8 mm. broad. 33. R. dasypoda. Leaves pubescent beneath; prickles usually stouter. 34. R. Bridgesii. I. CANINAE. The membersof this group are natives of the RYDBERG: NOTES ON ROSACEAE 69 Old World and are representedin this country by a few intro. duced species. I. ROSA RUBIGINOSA L. Mant. 2: 564. I77I The sweet brier is often cultivated and has escaped in many places in this country. In some parts of the easternUnited States it is thoroughlynaturalized. On the westerncoast it has estab- lished itselfin several places in Oregon and Washington,but the writer has seen herbarium specimens only from one place in California. On account of its stout pricklesit has been confused with R. nutkana,to which it has no close relationship. CALIFORNIA: Yreka, I9IO, Geo. D. Butler 1427, 1802. II. CINNAMOMIAE. This group is represented in Cali- fornia and Nevada only by species of the true Cinnamomiae, i. e., species with infrastipularspines usually present. 2. ROSA NUTKANA Presl, Epim. Bot. 203. I849 Althoughan easily distinguishedspecies, except fromthe next two species, it has been mistakenfor R. fraxinifoliaBorkh. (i. e., R. blanda Ait.) and R. WVoodsiiLindl. It has also been named R. caryocarpaDougl. and R. Lyalliana Crepin, but these names have not been published except in
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