CHICKWEED FAMILY 145 



1. Sagina apetala var. barbata Fenzl. Sticky Pearlwort. Fig. 1676. 



Sagina apetala var. barbata Fenzl ex Ledeb. Fl. Ross. 1 : 338. 1842. 

 Alsinella ciliata Greene, Fl. Fran. 126. 1891. 

 Sagina ciliata Heller, Muhlenbergia 1 : 50. 1904. 



Annual, more or less glandular, stems few to numerous, erect or ascending, 3-5 cm. high. 

 Leaves linear-subulate, involute, 3-5 mm. long, long-ciliate toward the base, tipped with a short 

 bristle at apex ; pedicels 3-10 mm. long ; sepals 4, oval, obtuse, scarcely 2 mm. long ; petals want- 

 ing ; capsule barely exceeding the calyx ; seeds minutely muriculately rugulose under high mag- 

 nification. 



Wayside and waste places; western Washington to southern California. Native of Europe and Asia. Type 

 locality : Russia. April-June. 



2. Sagina procumbens L. Procumbent Pearlwort. Fig. 1677. 



Sagina procumbens L. Sp. PI. 128. 1753. 



Annual or sometimes perennial, branching from the base, decumbent to depressed, glabrous, 

 3-8 cm. high. Leaves narrowly linear, subulate, 2-6 mm. long ; peduncles capillary, well exceeding 

 the leaves ; sepals 4 rarely 5, oblong-ovate, obtuse ; petals shorter than the sepals, rarely wanting ; 

 stamens 4 or 5 ; capsule scarcely exceeding the sepals, often nodding in fruit ; seeds finely reticulate 

 but not roughened. 



Moist places near the coast, mainly Boreal Zones; British Columbia and the Olympic Peninsula, Washing- 

 ton, to northwestern California; also on the Atlantic coast. Native of Europe and Asia. May-Sept. Poverty. 



3. Sagina occidentalis S. Wats. Western Pearlwort. Fig. 1678. 



Sagina occidentalis S. Wats. Proc. Amer. Acad. 10: 344. 1875. 

 Alsinella occidentalis Greene, Fl. Fran. 125. 1891. 



Annual, glabrous or the pedicels and calyx sometimes more or less glandular, the stems few 

 to many from the base, 4-12 cm. long, ascending or decumbent. Leaves nearly filiform, not 

 forming persistent rosettes at the base ; pedicels 5-20 mm. long ; sepals 5, oblong-ovate, obtuse, 

 2 mm. long ; petals a little shorter than the sepals ; capsules 3 mm. long. 



Moist ground, Transition and Sonoran Zones; Vancouver Island to southern California, east to Idaho. 

 Type locality: not stated. March-June. 



4. Sagina saginoides var. hesperia Fernald. Arctic Pearlwort. Fig. 1679. 



Sagina saginoides var. hesperia Fernald, Rhodora 27: 131. 1925. 



Perennial, glabrous, tufted, 3-10 cm. high. Leaves linear-subulate or filiform, 4-10 mm. long; 

 pedicels solitary and terminal or occasionally one or more in the upper axils, 5-20 mm. long, often 

 curved at the summit; sepals 5, oval, obtuse, 1.5-2 mm. long; petals a little shorter than the 

 sepals ; capsule 3 mm. long. 



Moist places, mainly Boreal Zones; British Columbia to southern California, Alberta, Nevada, Utah, and 

 Colorado. Type locality: Chambers Lake, altitude 9,500 feet, Colorado. June-Aug. 



Typical S. saginoides (L.) Britton (S. Linnaei Presl) occurs in arctic America and Eurasia. It has the 

 sepals 2-3 mm. long. 



5. Sagina crassicaulis S. Wats. Beach Pearlwort. Fig. 1680. 



Sagina crassicaulis S. Wats. Proc. Amer. Acad. 18: 191. 1883. 

 Alsinella crassicaulis Greene, Fl. Fran. 125. 1891. 



Perennial from a stout root, glabrous and distinctly fleshy, the stems several to many, not 

 filiform, branching, 4-12 cm. long. Basal leaves forming a persistent rosette, linear, 15-30 mm. 

 long, the upper shorter, connate by broad scarious bases ; pedicels usually elongated, 1-4 cm. long, 

 straight ; flowers 5-merous ; sepals broadly oval, 3 mm. long ; petals scarcely as long as the sepals ; 

 capsule 4 mm. long. 



Moist places along the coast, Canadian and Transition Zones; Aleutian Islands and Vancouver Island to 

 Monterey County, California. Type locality: Dillon's Beach, Marin County, California. June-Dec. 



5. ARENARIA L.. Sp. PI. 423. 1753. 



Annual or perennial herbs, with sessile leaves and terminal cymose or capitate, rarely 

 axillary and solitary flowers. Sepals 5. Petals 5 or rarely wanting, entire or slightly 

 emarginate. Stamens 10. Styles 2-5, commonly 3. Ovary 1-celled, many-ovuled. Capsule 

 spherical or oblong, dehiscent by as many or by twice as many valves or teeth as styles ; 

 seeds reniform or globose. [Name Latin, meaning sand, in reference to the habitat of 

 many species.] 



A genus of wide geographical distribution comprising about 150 species. Type species, Arenaria scrpyllifolia L. 



Valves of the capsule entire. 



Annuals. 



Petals broadly obovate, well exceeding the sepals; seeds flattened and broadly margined. 



1. A. Douglasu. 



Petals oblong and about equaling or exceeding the sepals, or minute or wanting. 



Sepals nerveless, glandular-pubescent. 2. A. Howellii. 



Sepals more or less strongly 1-3-nerved; or if nerveless the plants glabrous. 



